Clean up  exercises for browser #89 -fixed #89
Clean up  exercises for browser #89
-fixed #89

nesterone/sf-eng-init-fellow,nesterone/sf-eng-init-bazzika,nesterone/sf-eng-init-bazzika,nesterone/sf-eng-init-gl-spring-2016,nesterone/sf-eng-init-gl-spring-2016,nesterone/sf-eng-init-fellow