Update the default component icons so they are higher resolution. <img width="72" alt="storm-bolt" src="https://cloud.githubusercontent.com/assets/2532770/8639613/6dd36e16-28ad-11e5-8f53-d42dd29ef306.png"> <img width="72" alt="storm-spout" src="https://cloud.githubusercontent.com/assets/2532770/8639614/6dd468de-28ad-11e5-8812-aef481c9026a.png"> 
