Fix reference error props is not defined

Throws a runtime error when the component updates because props is not defined.

Author: Ryan Haywood

src/js/index.js

@@ -63,9 +63,9 @@ export default class extends React.Component {
     }
 
     componentWillReceiveProps = (nextProps) => {
-        this.init(props);
+        this.init(this.props);
         this.setState(this.state);
     }
 
 
-}
+}