Merge pull request #27 from jarvisluong/master

fix propTypes duplicate reference in index.js

Author: crazycodeboy

index.js

@@ -18,7 +18,7 @@ import {
 } from 'react-native'
 
 const ViewPropTypes = RNViewPropTypes || View.propTypes;
-
+ 
 export const DURATION = {
     LENGTH_LONG: 2000,
     LENGTH_SHORT: 500,