code: function(appConfig, appContent) {
  		// instantiate F2.UI
  		appConfig.ui = new F2.UI(appConfig);
  
  		// instantiate F2.App
  		if (F2.Apps[appConfig.appId] !== undefined) {
  			if (typeof F2.Apps[appConfig.appId] === 'function') {
  
  				// IE
  				setTimeout(function() {
  					_apps[appConfig.instanceId].app = new F2.Apps[appConfig.appId](appConfig, appContent, appConfig.root);
  					if (_apps[appConfig.instanceId].app['init'] !== undefined) {
  						_apps[appConfig.instanceId].app.init();
  					}
  				}, 0);
  
  			}
  			else {
  				F2.log('app initialization class is defined but not a function. (' + appConfig.appId + ')');
  			}
  		}
  	}
docs: Instantiates each app from it's appConfig and stores that in a local private collection
  @method _createAppInstance
  @private
  @param {Array} appConfigs An array of {{#crossLink "F2.AppConfig"}}{{/crossLink}} objects