fix lint warnings: white spaces and es6 arrow func

Summary:
fixed some lint warnings: semi-colons, white spaces, and es6 arrow function syntax
Closes https://github.com/facebook/react-native/pull/5218

Reviewed By: svcscm

Differential Revision: D2818388

Pulled By: androidtrunkagent

fb-gh-sync-id: 812792dfae87d117fd7a5ffc6faa375c161c3b15

Examples/UIExplorer/AlertIOSExample.js

@@ -55,7 +55,7 @@ exports.examples = [{
               {'default'}
             </Text>
           </View>
-          
+
         </TouchableHighlight>
         <TouchableHighlight
           style={styles.wrapper}
@@ -73,7 +73,7 @@ exports.examples = [{
               plain-text
             </Text>
           </View>
-          
+
         </TouchableHighlight>
         <TouchableHighlight
           style={styles.wrapper}
@@ -91,7 +91,7 @@ exports.examples = [{
               secure-text
             </Text>
           </View>
-          
+
         </TouchableHighlight>
         <TouchableHighlight
           style={styles.wrapper}
@@ -109,7 +109,7 @@ exports.examples = [{
               login-password
             </Text>
           </View>
-          
+
         </TouchableHighlight>
       </View>
     );
@@ -118,7 +118,7 @@ exports.examples = [{
 {
   title: 'Prompt',
   render(): React.Component {
-    return <PromptExample />
+    return <PromptExample />;
   }
 }];