fix RN 27 deprecation warning of DeviceEventEmitter for keyboard events (related to PR wix-incubator#8).

maintains backwards compatibility.

Author: artald

example/package.json

@@ -6,8 +6,8 @@
     "start": "react-native start"
   },
   "dependencies": {
-    "react-native": "0.25.1",
-    "react": "0.14.5",
+    "react-native": "0.27.2",
+    "react": "15.1.0",
     "react-native-keyboard-aware-scrollview": "latest"
   }
 }

package.json

@@ -7,7 +7,7 @@
     "type": "git",
     "url": "https://github.com/wix/react-native-keyboard-aware-scrollview.git"
   },
-  "version": "1.0.3",
+  "version": "1.1.0",
   "description": "React Native Keyboard Aware ScrollView - auto adjust content ScrollView",
   "nativePackage": true,
   "bugs": {

src/KeyboardAwareBase.js

@@ -3,6 +3,7 @@ import React , { Component, PropTypes } from 'react';
 
 import ReactNative, {
   DeviceEventEmitter,
+  Keyboard,
   NativeModules
 } from 'react-native';
 
@@ -22,9 +23,10 @@ export default class KeyboardAwareBase extends Component {
   }
 
   _addKeyboardEventListeners() {
+    const KeyboardEventsObj = Keyboard || DeviceEventEmitter;
     this.keyboardEventListeners = [
-      DeviceEventEmitter.addListener('keyboardWillShow', this._onKeyboardWillShow),
-      DeviceEventEmitter.addListener('keyboardWillHide', this._onKeyboardWillHide)
+      KeyboardEventsObj.addListener('keyboardWillShow', this._onKeyboardWillShow),
+      KeyboardEventsObj.addListener('keyboardWillHide', this._onKeyboardWillHide)
     ];
   }