chore(release): 5.0.4 [skip ci]

## [5.0.4](https://github.com/react-native-community/react-native-webview/compare/v5.0.3...v5.0.4) (2019-02-04)

### Bug Fixes

* **UIWebview:** Deprecate UIWebView and add link to issue ([#313](https://github.com/react-native-community/react-native-webview/issues/313)) ([4c80240](https://github.com/react-native-community/react-native-webview/commit/4c80240))

package.json

     "Thibault Malbranche <malbranche.thibault@gmail.com>"
   ],
   "license": "MIT",
-  "version": "5.0.3",
+  "version": "5.0.4",
   "homepage": "https://github.com/react-native-community/react-native-webview#readme",
   "scripts": {
     "test:js": "jest",