Merge pull request #97 from jitsi/fix_device_change_available

Adds NWJS to the list of browsers capable of changing the input devices

modules/RTC/RTCUtils.js

         return RTCBrowserType.isChrome() ||
             RTCBrowserType.isFirefox() ||
             RTCBrowserType.isOpera() ||
-            RTCBrowserType.isTemasysPluginUsed();
+            RTCBrowserType.isTemasysPluginUsed() ||
+            RTCBrowserType.isNWJS();
     },
     /**
      * A method to handle stopping of the stream.