Use prop-types module

Author: aouaki

SignatureCapture.js

@@ -2,7 +2,7 @@
 
 var ReactNative = require("react-native");
 var React = require("react");
-var {PropTypes} = React;
+var PropTypes = require("prop-types");
 var {requireNativeComponent, View, UIManager, DeviceEventEmitter} = ReactNative;
 
 class SignatureCapture extends React.Component {

package-lock.json

@@ -24,5 +24,8 @@
   "bugs": {
     "url": "https://github.com/RepairShopr/react-native-signature-capture/issues"
   },
-  "homepage": "https://github.com/RepairShopr/react-native-signature-capture#readme"
+  "homepage": "https://github.com/RepairShopr/react-native-signature-capture#readme",
+  "dependencies": {
+    "prop-types": "^15.6.2"
+  }
 }