Wrote an example plugin

Author: torch2424

Diff for: demo/examplePlugin.js

@@ -0,0 +1,11 @@
+// Example Plugin for the libarary
+
+export default function ExamplePlugin() {
+  return {
+    onAddPlugin: () => console.log('ExamplePlugin addPlugin()'),
+    onGetState: (CurrentResponsiveGamepadState) => {
+      CurrentResponsiveGamepadState.EXAMPLE_PLUGIN_ADDED =  true;
+      return CurrentResponsiveGamepadState;
+    }
+  }
+}

Diff for: demo/index.js

@@ -1,18 +1,24 @@
 import { h, render, Component } from 'preact';
 import {ResponsiveGamepad} from '../dist/responsive-gamepad.esm';
 
+import ExamplePlugin from './examplePlugin';
+
 import ResponsiveGamepadState from './state';
 import Touchpad from './touchpad';
 
 import './index.css';
 
-ResponsiveGamepad.onInputsChange('DPAD_UP', state => {
-  console.log('demo: DPAD_UP!', state.DPAD_UP);
-  console.log('demo: state', state);
-});
+ResponsiveGamepad.onInputsChange(
+  ResponsiveGamepad.RESPONSIVE_GAMEPAD_INPUTS.DPAD_UP, 
+  state => {
+    console.log('demo: DPAD_UP!', state.DPAD_UP);
+    console.log('demo: state', state);
+  }
+);
 
 class ResponsiveGamepadDemo extends Component {
   componentDidMount() {
+    ResponsiveGamepad.addPlugin(ExamplePlugin());
     ResponsiveGamepad.enable();
   }
 

Diff for: dist/responsive-gamepad.cjs.js

@@ -949,7 +949,7 @@ class ResponsiveGamepadService {
     });
     this.plugins.forEach(plugin => {
       if (plugin.onGetState) {
-        const response = plugin.onGetState(this.state);
+        const response = plugin.onGetState(state);
 
         if (response) {
           this.state = response;

Diff for: dist/responsive-gamepad.esm.js

@@ -945,7 +945,7 @@ class ResponsiveGamepadService {
     });
     this.plugins.forEach(plugin => {
       if (plugin.onGetState) {
-        const response = plugin.onGetState(this.state);
+        const response = plugin.onGetState(state);
 
         if (response) {
           this.state = response;

Diff for: dist/responsive-gamepad.umd.js

@@ -951,7 +951,7 @@
       });
       this.plugins.forEach(plugin => {
         if (plugin.onGetState) {
-          const response = plugin.onGetState(this.state);
+          const response = plugin.onGetState(state);
 
           if (response) {
             this.state = response;

Diff for: lib/index.js

@@ -153,7 +153,7 @@ class ResponsiveGamepadService {
 
     this.plugins.forEach(plugin => {
       if (plugin.onGetState) {
-        const response = plugin.onGetState(this.state);
+        const response = plugin.onGetState(state);
         if (response) {
           this.state = response;
         }