Added close button functionality

src/js/components/navbar.js

@@ -1,14 +1,19 @@
 var React = require('react');
+var ipc = window.require('ipc');
 
 var NavBar = React.createClass({
+  handleClose: function (evt) {
+    ipc.send('close');
+  },
+  
   render: function () {
     return (
       <nav id="navbar" className="navbar navbar-default navbar-fixed-top">
         <div className="container-fluid">
           <a className="navbar-brand">Keyboard Mechanizer</a>
           <ul className="nav navbar-nav navbar-right">
-            <li><a href="#">Hide</a></li>
+            <li><a href="#" className="no-drag">Hide</a></li>
-            <li><a href="#"><i className="icon ion-close-round"></i></a></li>
+            <li><a href="#" onClick={this.handleClose}className="no-drag"><i className="icon ion-close-round"></i></a></li>
           </ul>
         </div>
       </nav>

src/main.js

@@ -41,3 +41,7 @@ ipc.on('hide', function () {
 ipc.on('show', function () {
 	mainWindow.show();
 });
+
+ipc.on('close', function () {
+	mainWindow.close();
+});