Remove ember-ajax

Author: Ilya Radchenko

package.json

@@ -1,5 +1,6 @@
 {
   "name": "ember-cli-github-pages",
+  "version": "0.1.3",
   "description": "Easily manage gh-pages of your ember-cli addon",
   "keywords": [
     "ember-addon",
@@ -27,7 +28,6 @@
   },
   "devDependencies": {
     "broccoli-asset-rev": "^2.4.5",
-    "ember-ajax": "^3.0.0",
     "ember-cli": "~2.17.1",
     "ember-cli-dependency-checker": "^2.0.0",
     "ember-cli-eslint": "^4.2.1",
@@ -48,7 +48,6 @@
   "engines": {
     "node": "^4.5 || 6.* || >= 7.*"
   },
-  "version": "0.1.3",
   "ember-addon": {
     "configPath": "tests/dummy/config"
   }