Merge pull request #1 from prakashw3expert/patch-1

Update index.js

Author: aprimadi

index.js

@@ -1,4 +1,5 @@
-import React, { Component, PropTypes } from 'react';
+import React, { Component } from 'react';
+import PropTypes from 'prop-types';
 import {
  DeviceEventEmitter, // android
  NativeAppEventEmitter, // ios