Merge pull request #328 from plotly/jquery-namespace

Replace $ check for jQuery check

Author: mdtusz

src/lib/events.js

@@ -53,7 +53,7 @@ var Events = {
          * events.
          */
         plotObj.emit = function(event, data) {
-            if(typeof $ !== 'undefined') {
+            if(typeof jQuery !== 'undefined') {
                 $(plotObj).trigger(event, data);
             }
 
@@ -76,7 +76,7 @@ var Events = {
          * If Jquery exists run all its handlers for this event and
          * collect the return value of the LAST handler function
          */
-        if(typeof $ !== 'undefined') {
+        if(typeof jQuery !== 'undefined') {
             jQueryHandlerValue = $(plotObj).triggerHandler(event, data);
         }