add missing quote

As described in the [NPM documentation](https://docs.npmjs.com/misc/scripts#prepublish-and-prepare), the `prepublish` script is deprecated for this use-case. Instead, `prepare` should be used for essential build tasks.

In practice, this makes it possible to depend on `react-native-webview` via git. If I contribute a new feature, I can use the feature right away by depending on its git branch, without waiting for upstream to publish, or even approve my pull request. This is great for experimentation.

* Update Expo support state in README

* Update README.md

# [6.3.0](https://github.com/react-native-community/react-native-webview/compare/v6.2.3...v6.3.0) (2019-06-13)

### Features

* **iOS WKWebView:** Add mainDocumentURL to onShouldStartLoadWithRequest([#493](https://github.com/react-native-community/react-native-webview/issues/493)) ([71d1fcc](https://github.com/react-native-community/react-native-webview/commit/71d1fcc))

* Pass mainDocumentURL to onShouldStartLoadWithRequest

* Update reference

* Update typescript types

* Update WebViewTypes.ts

## [6.2.3](https://github.com/react-native-community/react-native-webview/compare/v6.2.2...v6.2.3) (2019-06-13)

### Bug Fixes

* **types:** android/allowsFullscreenVideo ([#590](https://github.com/react-native-community/react-native-webview/issues/590)) ([f8a560b](https://github.com/react-native-community/react-native-webview/commit/f8a560b))

Fix missing `allowsFullscreenVideo` prop after https://github.com/react-native-community/react-native-webview/pull/325 got merged.

Added a note about the baseUrl usage since this has been the cause of some filed issues e.g. https://github.com/react-native-community/react-native-webview/issues/526#issuecomment-498067637

## [6.2.2](https://github.com/react-native-community/react-native-webview/compare/v6.2.1...v6.2.2) (2019-06-02)

### Bug Fixes

* **types:** Add missing applicationNameForUserAgent type ([#589](https://github.com/react-native-community/react-native-webview/issues/589)) ([b06be7e](https://github.com/react-native-community/react-native-webview/commit/b06be7e))

## [6.2.1](https://github.com/react-native-community/react-native-webview/compare/v6.2.0...v6.2.1) (2019-06-02)

### Bug Fixes

* **iOS WKWebView:** contentInset not properly applied ([#603](https://github.com/react-native-community/react-native-webview/issues/603)) ([6e79f2a](https://github.com/react-native-community/react-native-webview/commit/6e79f2a))

Per https://github.com/react-native-community/.github/issues/1\#issuecomment-496203158

# [6.2.0](https://github.com/react-native-community/react-native-webview/compare/v6.1.1...v6.2.0) (2019-06-02)

### Features

* **loading:** Changed loading/error rendering ([#612](https://github.com/react-native-community/react-native-webview/issues/612)) ([d429e82](https://github.com/react-native-community/react-native-webview/commit/d429e82))

## [6.1.1](https://github.com/react-native-community/react-native-webview/compare/v6.1.0...v6.1.1) (2019-06-02)

### Bug Fixes

* **performance:** Improved `onScroll` to work efficiently on Android ([#609](https://github.com/react-native-community/react-native-webview/issues/609)) ([d8743ee](https://github.com/react-native-community/react-native-webview/commit/d8743ee))

[skip ci]

# [6.1.0](https://github.com/react-native-community/react-native-webview/compare/v6.0.2...v6.1.0) (2019-05-20)

### Features

* **iOS WkWebview:** Add applicationNameForUserAgent support ([#506](https://github.com/react-native-community/react-native-webview/issues/506)) ([4dc4b89](https://github.com/react-native-community/react-native-webview/commit/4dc4b89))

## [6.0.2](https://github.com/react-native-community/react-native-webview/compare/v6.0.1...v6.0.2) (2019-05-19)

### Bug Fixes

* **AndroidX support:** Fixed broken import + added instructions ([#583](https://github.com/react-native-community/react-native-webview/issues/583)) ([585ac7a](https://github.com/react-native-community/react-native-webview/commit/585ac7a)), closes [#580](https://github.com/react-native-community/react-native-webview/issues/580) [#581](https://github.com/react-native-community/react-native-webview/issues/581) [#582](https://github.com/react-native-community/react-native-webview/issues/582)

Hello, in order to use react-native-webview > 6.0.2 please make your android/gradle.properties contains:
```
android.useAndroidX=true
android.enableJetifier=true
```
This enables AndroidX libraries which are the new standard.

fixes #580 
fixes #581 
fixes #582

* docs: update README.md

* docs: update .all-contributorsrc

## [6.0.1](https://github.com/react-native-community/react-native-webview/compare/v6.0.0...v6.0.1) (2019-05-17)

### Bug Fixes

* **Android:** on scroll syntax error ([#577](https://github.com/react-native-community/react-native-webview/issues/577)) ([cbbff21](https://github.com/react-native-community/react-native-webview/commit/cbbff21))

getJSEventName() needs a ScrollEventType parameter

# [6.0.0](https://github.com/react-native-community/react-native-webview/compare/v5.9.0...v6.0.0) (2019-05-16)

### Features

* **android:** Migrate to Android X ([#520](https://github.com/react-native-community/react-native-webview/issues/520)) ([1d6c88d](https://github.com/react-native-community/react-native-webview/commit/1d6c88d))

### BREAKING CHANGES

* **android:** If you override compileSdkVersion<28  it won't work anymore.

BREAKING CHANGE:
If you override compileSdkVersion<28  it won't work anymore.

# [5.9.0](https://github.com/react-native-community/react-native-webview/compare/v5.8.2...v5.9.0) (2019-05-16)

### Bug Fixes

* **Android:** geolocation access ([#562](https://github.com/react-native-community/react-native-webview/issues/562)) ([409b9ae](https://github.com/react-native-community/react-native-webview/commit/409b9ae))

### Features

* **fullscreen videos:** Support fullscreen video on Android ([#325](https://github.com/react-native-community/react-native-webview/issues/325)) ([d72c2ae](https://github.com/react-native-community/react-native-webview/commit/d72c2ae))
* **onScroll:** Add `onScroll` callback for iOS & Android ([#516](https://github.com/react-native-community/react-native-webview/issues/516)) ([e4c8dab](https://github.com/react-native-community/react-native-webview/commit/e4c8dab))

* Add `onScroll` callback for iOS & Android

This code was mostly extracted from https://github.com/react-native-community/react-native-webview/pull/202

I tried and tried to make it work with `Animated.event`'s `useNativeDriver`, but I was unsuccessful 😢 that'll have to be done later once I understand better how Animated's native stuff is hooked up.

* fix crash for missing onScroll

* Extract WebChromeClient from an anonymous class

* Support fullscreen videos on Android

Forces landscape mode while playing.

* Use sticky immersive mode for fullscreen videos

No longer forces landscape mode as that is a problem for portrait videos - allow
the user to rotate as necessary.

Only supports KitKat or greater, and falls back to leaving the status and navigation
bars visible for lower than KitKat. This is the easiest way to prevent issues with
resizing the video during playback.

Also implement a lifecyle event listener which means if a user backgrounds the app
or locks the screen with the video fullscreen, the UI visibility is re-applied.

* Add allowsFullscreenVideo prop to control whether videos can be fullscreen on Android

Luckily, we're able to change the WebChromeClient on demand in response to prop changes
without seeming to do any harm. If you switch to disallow fullscreen, it will attempt
to close the currently fullscreened video (if there is one) so users aren't stuck.

I did notice a bug that if you go from fullscreen allowed, to fullscreen disallowed,
the fullscreen button will remain on the video. Tapping the button will have no effect.

## [5.8.2](https://github.com/react-native-community/react-native-webview/compare/v5.8.1...v5.8.2) (2019-05-13)

### Bug Fixes

* **android:** unable to re-enable hardware acceleration after disabled it ([#553](https://github.com/react-native-community/react-native-webview/issues/553)) ([c8977ec](https://github.com/react-native-community/react-native-webview/commit/c8977ec))

## [5.8.1](https://github.com/react-native-community/react-native-webview/compare/v5.8.0...v5.8.1) (2019-04-30)

### Bug Fixes

* **WKWebView:** StatusBar is gone after fullscreen (iOS 12) ([#544](https://github.com/react-native-community/react-native-webview/issues/544)) ([c2914a8](https://github.com/react-native-community/react-native-webview/commit/c2914a8)), closes [#62](https://github.com/react-native-community/react-native-webview/issues/62)

fixes #62

# [5.8.0](https://github.com/react-native-community/react-native-webview/compare/v5.7.2...v5.8.0) (2019-04-29)

### Features

* **WKWebView:** Allow focus without user interaction ([#540](https://github.com/react-native-community/react-native-webview/issues/540)) ([455c30e](https://github.com/react-native-community/react-native-webview/commit/455c30e))

* docs: update README.md

* docs: update .all-contributorsrc

* [iOS] Allow focus without user interaction

* Add documentation for keyboardDisplayRequiresUserAction

* set keyboardDisplayRequiresUserAction default to true

## [5.7.2](https://github.com/react-native-community/react-native-webview/compare/v5.7.1...v5.7.2) (2019-04-29)

### Bug Fixes

* **types:** wrong parameter type in onLoadProgress ([#538](https://github.com/react-native-community/react-native-webview/issues/538)) ([5892601](https://github.com/react-native-community/react-native-webview/commit/5892601))

WebViewProgressEvent musst be wrapped within NativeSyntheticEvent

* docs: update README.md

* docs: update .all-contributorsrc

## [5.7.1](https://github.com/react-native-community/react-native-webview/compare/v5.7.0...v5.7.1) (2019-04-23)

### Bug Fixes

* **WKWebView:** iOS crash when WebView's title is nil ([#521](https://github.com/react-native-community/react-native-webview/issues/521)) ([7a91221](https://github.com/react-native-community/react-native-webview/commit/7a91221))