chore(package): update ember-resolver to version 5.2.0

Closes #188

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "ember-export-application-global": "^2.0.0",
     "ember-inflector": "^2.1.0",
     "ember-load-initializers": "^1.0.0",
-    "ember-resolver": "^4.0.0",
+    "ember-resolver": "^5.2.0",
     "ember-source": "~2.17.0",
     "ember-welcome-page": "^3.0.0",
     "loader.js": "^4.2.3"