function configure(name, value) {
	  if (arguments.length === 2) {
	    config[name] = value;
	  } else {
	    return config[name];
	  }
	}
Use `trigger` to fire custom events. For example:
	     ```javascript
	    object.on('foo', function(){
	      console.log('foo event happened!');
	    });
	    object.trigger('foo');
	    // 'foo event happened!' logged to the console
	    ```
	     You can also pass a value as a second argument to `trigger` that will be
	    passed as an argument to all event listeners for the event:
	     ```javascript
	    object.on('foo', function(value){
	      console.log(value.name);
	    });
	     object.trigger('foo', { name: 'bar' });
	    // 'bar' logged to the console
	    ```
	     @method trigger
	    @for RSVP.EventTarget
	    @private
	    @param {String} eventName name of the event to be triggered
	    @param {*} options optional value to be passed to any event handlers for
	    the given `eventName`