Merge pull request #1444 from LandrAudio/fix/buffering_loading_state

fix: set state to loading when sound is buffering

Author: goldfire

src/howler.core.js

@@ -976,8 +976,11 @@
           playHtml5();
         } else {
           self._playLock = true;
+          self._state = 'loading';
 
           var listener = function() {
+            self._state = 'loaded';
+            
             // Begin playback.
             playHtml5();