Switched to the prop-types npm packages instead of React.PropTypes

.gitignore

@@ -1,2 +1,3 @@
 .DS_Store
 .idea
+node_modules/

index.js

@@ -1,4 +1,5 @@
 import React from 'react';
+import PropTypes from 'prop-types';
 import { Image, TouchableOpacity } from 'react-native';
 import resolveAssetSource from 'react-native/Libraries/Image/resolveAssetSource';
 
@@ -81,9 +82,9 @@ export default class ScalableImage extends React.Component {
 }
 
 ScalableImage.propTypes = {
-    width: React.PropTypes.number,
-    height: React.PropTypes.number,
-    maxWidth: React.PropTypes.number,
-    maxHeight: React.PropTypes.number,
-    onPress: React.PropTypes.func,
+    width: PropTypes.number,
+    height: PropTypes.number,
+    maxWidth: PropTypes.number,
+    maxHeight: PropTypes.number,
+    onPress: PropTypes.func,
 };

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-scalable-image",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "license": "MIT",
   "description": "React Native Image component which scales width or height automatically to keep the aspect ratio",
   "keywords": [
@@ -27,6 +27,7 @@
   "dependencies": {},
   "devDependencies": {},
   "peerDependencies": {
+    "prop-types": "^15.5.10",
     "react": "^15.4",
     "react-native": "^0.41.2"
   },