chore(package): update ember-cli to version 3.0.2

Closes #114

Author: greenkeeper[bot]

package.json

@@ -21,7 +21,7 @@
   "devDependencies": {
     "broccoli-asset-rev": "^2.4.5",
     "ember-ci": "0.1.3",
-    "ember-cli": "~2.18.0",
+    "ember-cli": "~3.0.2",
     "ember-cli-app-version": "^3.0.0",
     "ember-cli-dependency-checker": "^2.0.0",
     "ember-cli-eslint": "^4.2.3",