ember-linkify generates deprecation warning with latest ember: ember-cli-babel 5.2.4->6.6

vmalloc

Trying to run with latest ember gives: ``` DEPRECATION: ember-cli-babel 5.x has been deprecated. Please upgrade to at least ember-cli-babel 6.6. Version 5.2.4 located: ~/webapp/node_modules/ember-linkify/node_modules/ember-cli-babel ```