Support waiting and playing for buffering event (#41)

Author: davidjamesherzog

src/shaka.js

@@ -92,7 +92,11 @@ class Shaka extends Html5 {
     }
 
     this.shaka_.addEventListener('buffering', function(event) {
-      if (event.buffering) me.vjsPlayer.trigger('waiting');
+      if (event.buffering) {
+        me.vjsPlayer.trigger('waiting');
+      } else {
+        me.vjsPlayer.trigger('playing');
+      }
     });
 
     this.shaka_.addEventListener('error', function(event) {