added intergration tests for disabled, error and placeholder
added intergration tests for disabled, error and placeholder

rox163/ember-frost-core,helrac/ember-frost-core,sglanzer/ember-frost-core,EWhite613/ember-frost-core,dafortin/ember-frost-core,dafortin/ember-frost-core,EWhite613/ember-frost-core,EWhite613/ember-frost-core,ciena-frost/ember-frost-core,rox163/ember-frost-core,ciena-frost/ember-frost-core,rox163/ember-frost-core,helrac/ember-frost-core,dafortin/ember-frost-core,sglanzer/ember-frost-core,sglanzer/ember-frost-core,ciena-frost/ember-frost-core,helrac/ember-frost-core