chore(package): update ember-ajax to version 2.4.1
chore(package): update ember-ajax to version 2.4.1

https://greenkeeper.io/
samselikoff/ember-lodash,levanto-financial/ember-lodash,samselikoff/ember-lodash,mike-north/ember-lodash,truenorth/ember-lodash,mike-north/ember-lodash,levanto-financial/ember-lodash,truenorth/ember-lodash