Merge branch 'master' into master

package.json

     "Thibault Malbranche <malbranche.thibault@gmail.com>"
   ],
   "license": "MIT",
-  "version": "2.11.0",
+  "version": "2.12.0",
   "homepage": "https://github.com/react-native-community/react-native-webview#readme",
   "scripts": {
     "test:ios:flow": "flow check",

typings/index.d.ts

   public reload: () => void;
   public stopLoading: () => void;
   public postMessage: (msg: string) => void;
-  public injectJavaScript: (js: string) => void
+  public injectJavaScript: (js: string) => void;
 }