Use the initializer as a target instead of the soon to be deprecated…

[bmac]

… initializer

Hello, The store initializer target currently is a empty initializer in Ember Data. I have an RFC and a PR to deprecate it a future Ember Data release. I did a search and found your addon is using the store initializer target and I have opened this pr for you to use the 'ember-data' initializer instead which will continue to be supported after the empty initializers are deprecated.