add ember release

Author: ghedamat

package.json

@@ -29,6 +29,7 @@
     "ember-cli-ic-ajax": "0.1.1",
     "ember-cli-inject-live-reload": "^1.3.0",
     "ember-cli-qunit": "0.3.10",
+    "ember-cli-release": "0.2.3",
     "ember-cli-uglify": "1.0.1",
     "ember-data": "1.0.0-beta.16.1",
     "ember-disable-prototype-extensions": "^1.0.0",