Reference word count, minor tweak.

Author: addyosmani

filter-replace.js

@@ -15,4 +15,4 @@ PolymerExpressions.prototype.replace = function (str, old, new_, maxCount) {
     }
 
     return res;
-}
+};

polymer-filters.html

@@ -7,6 +7,7 @@
 <script src="filter-reverse.js"></script>
 <script src="filter-replace.js"></script>
 <script src="filter-startsWith.js"></script>
+<script src="filter-wordcount.js"></script>
 
 <!--
 A collection of Polymer filters for formatting values of expressions for display to users
@@ -51,6 +52,10 @@
       {{name}}
     </template>
 
+####Word count
+
+    {{'Hello World' | wordcount}}
+
 @element polymer-filters
 @blurb A collection of Polymer filters for formatting values of expressions for display to users
 @homepage http://addyosmani.github.io/polymer-filters