Merge pull request #367 from bgrozev/cleanup

cleanup: Renames a function, adds documentation.

JitsiConference.js

         GlobalOnErrorHandler.callErrorHandler(error);
     }
 
-    this.rtc.onIncommingCall(jingleSession);
+    this.rtc.initializeDataChannels(jingleSession.peerconnection);
     // Add local Tracks to the ChatRoom
     this.rtc.localTracks.forEach(function(localTrack) {
         var ssrcInfo = null;

modules/RTC/RTC.js

         });
     }
 
-    onIncommingCall (event) {
+    /**
+     * Initializes the data channels of this instance.
+     * @param peerconnection the associated PeerConnection.
+     */
+    initializeDataChannels (peerconnection) {
         if(this.options.config.openSctp) {
-            this.dataChannels = new DataChannels(event.peerconnection,
+            this.dataChannels = new DataChannels(peerconnection,
                 this.eventEmitter);
             this._dataChannelOpenListener = () => {
                 // mark that dataChannel is opened