Fix dangling comma

Author: STRML

lib/CaptureClicks.js

@@ -10,7 +10,7 @@ var omit        = require('object.omit');
 var PROP_TYPES = {
   component: React.PropTypes.oneOfType([
     React.PropTypes.string,
-    React.PropTypes.func,
+    React.PropTypes.func
   ]).isRequired,
   environment: React.PropTypes.object,
   gotoURL: React.PropTypes.func