Fixes deprecation warning regarding using `includes` over `contains`
Fixes deprecation warning regarding using `includes` over `contains`

/Users/anavasar/Desktop/Screen Shot 2016-09-22 at 8.58.09 AM.png

bcardarella/ember-cli-meta-tags,bcardarella/ember-cli-meta-tags,ronco/ember-cli-meta-tags,ronco/ember-cli-meta-tags