chore(package): update ember-cli to version 3.10.0

Closes #5

Author: greenkeeper[bot]

package.json

@@ -26,7 +26,7 @@
   "devDependencies": {
     "broccoli-asset-rev": "^2.4.5",
     "ember-ajax": "^3.0.0",
-    "ember-cli": "~2.18.0",
+    "ember-cli": "~3.10.0",
     "ember-cli-code-coverage": "^1.0.0-beta.1",
     "ember-cli-dependency-checker": "^2.0.0",
     "ember-cli-eslint": "^4.2.1",