Merge pull request #128 from a-tarasyuk/master

Remove unnecessary dependency

Author: ValentinH

dist/rzslider.js

@@ -15,7 +15,7 @@
 
   if (typeof define === 'function' && define.amd) {
     // AMD. Register as an anonymous module.
-    define(['angular', 'underscore'], factory);
+    define(['angular'], factory);
   } else if (typeof module === 'object' && module.exports) {
     // Node. Does not work with strict CommonJS, but
     // only CommonJS-like environments that support module.exports,