[BUGFIX release-1-13] update ember-inflector & import usage

fixes emberjs#4142

Correcting the import usage fixes which resolver is used so users can
override with their own inflections.

Author: Stanley Stuart

package.json

@@ -56,7 +56,7 @@
     "ejs": "^1.0.0",
     "ember-cli": "^0.2.2",
     "ember-new-computed": "1.0.2",
-    "ember-inflector": "^1.9.2",
+    "ember-inflector": "^1.9.4",
     "ember-publisher": "0.0.7",
     "es6-module-transpiler": "^0.9.5",
     "es6-module-transpiler-amd-formatter": "^0.2.4",