Merge pull request #116 from rictic/patch-1

Fix import url to point to actual file

Author: dfreedm

src/common-utils.js

@@ -10,7 +10,7 @@ subject to an additional IP rights grant found at http://polymer.github.io/PATEN
 
 'use strict';
 
-import { MIXIN_MATCH, VAR_ASSIGN } from './common-regex'
+import { MIXIN_MATCH, VAR_ASSIGN } from './common-regex.js'
 
 /**
  * @param {Element} element
@@ -56,4 +56,4 @@ export function detectMixin(cssText) {
   MIXIN_MATCH.lastIndex = 0;
   VAR_ASSIGN.lastIndex = 0;
   return has;
-}
+}