fix(proptypes): moved proptypes out to deps

Author: st0ffern

package.json

@@ -29,5 +29,8 @@
     "commitizen": {
       "path": "./node_modules/cz-conventional-changelog"
     }
+  },
+  "dependencies": {
+    "prop-types": "^15.6.0"
   }
 }

src/FlatListItem.js

@@ -2,11 +2,12 @@ import React from 'react'
 import { 
   View,
 } from 'react-native'
+import PropTypes from 'prop-types'
 
 
 export default class FlatListItem extends React.PureComponent {
   static propTypes = {
-    viewComponent: React.PropTypes.element.isRequired
+    viewComponent: PropTypes.element.isRequired
   };
 
   constructor(props) {

src/OptimizedFlatList.js

@@ -2,7 +2,6 @@ import React from 'react'
 import { 
   FlatList,
 } from 'react-native'
-
 import FlatListItem from './FlatListItem'
 
 export default class OptimizedFlatList extends React.PureComponent {