Added command parameter to prevent update

"--without-update"
Fixes #647

app/Application.js

@@ -34,7 +34,7 @@ Ext.define('Rambox.Application', {
 		Rambox.ux.Auth0.init();
 
 		// Check for updates
-		Rambox.app.checkUpdate(true);
+		if ( require('electron').remote.process.argv.indexOf('--without-update') === -1 ) Rambox.app.checkUpdate(true);
 
 		// Add shortcuts to switch services using CTRL + Number
 		var map = new Ext.util.KeyMap({

electron/main.js

@@ -156,7 +156,7 @@ function createWindow () {
 
 	tray.create(mainWindow, config);
 
-	if ( fs.existsSync(path.resolve(path.dirname(process.execPath), '..', 'Update.exe')) ) updater.initialize(mainWindow);
+	if ( fs.existsSync(path.resolve(path.dirname(process.execPath), '..', 'Update.exe')) && process.argv.indexOf('--without-update') === -1 ) updater.initialize(mainWindow);
 
 	// Open links in default browser
 	mainWindow.webContents.on('new-window', function(e, url, frameName, disposition, options) {
@@ -184,7 +184,7 @@ function createWindow () {
 		// Navigate the window forward when the user hits their mouse forward button
 		if ( cmd === 'browser-forward' ) mainWindow.webContents.executeJavaScript('if(Ext.cq1("app-main")) Ext.cq1("app-main").getActiveTab().goForward();');
 	});
-	
+
 	// Emitted when the window is closed.
 	mainWindow.on('close', function(e) {
 		if ( !isQuitting ) {