chore(package): update ember-cli to version 2.5.1
chore(package): update ember-cli to version 2.5.1

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mike-north/ember-intercom-io,levanto-financial/ember-intercom-io,levanto-financial/ember-intercom-io,seawatts/ember-intercom-io,mike-north/ember-intercom-io,seawatts/ember-intercom-io