chore(package): update ember-mocha to version 0.16.1

Closes #60

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "ember-export-application-global": "^2.0.0",
     "ember-load-initializers": "^2.0.0",
     "ember-maybe-import-regenerator": "^0.1.6",
-    "ember-mocha": "^0.14.0",
+    "ember-mocha": "^0.16.1",
     "ember-resolver": "^5.1.3",
     "ember-sinon": "^3.1.0",
     "ember-source": "~3.8.0",