Fix configuration.
Fix configuration.

Closes #7

zotebook/ember-idx-tabs,avdv/ember-idx-tabs,cjc343/ember-idx-tabs,indexiatech/ember-idx-tabs,indexiatech/ember-idx-tabs,avdv/ember-idx-tabs,zotebook/ember-idx-tabs,avdv/ember-idx-tabs,cjc343/ember-idx-tabs,cjc343/ember-idx-tabs,indexiatech/ember-idx-tabs,zotebook/ember-idx-tabs