Updated Readme and package version

Author: jeffreylanters

README.md

@@ -30,6 +30,13 @@ export class App extends Component {
 }
 ```
 
+## Optional attributes
+
+```js
+// Overruling the module
+<Unity src="Build/myGame.json" module={this.myCustomModule} />
+```
+
 # communication
 Unity allows you to send Javascript messages to the Unity content. In order to do so using React you have to import the Message function from 'react-unity-webgl'. The first parameter is the target game object name, the next is the method name, and the last is a optional parameter value.
 
@@ -84,4 +91,4 @@ The player will be injected in the a component with the className "unity-contain
     <script src="Build/UnityLoader.js"></script>
     <script src="compiled/bundle.js"></script>
 </html>
-```
+```

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-unity-webgl",
-  "version": "5.7.0",
+  "version": "5.7.1",
   "description": "A Unity WebGL component for your React application",
   "main": "lib/react-unity-webgl.js",
   "scripts": {