Merge pull request #1417 from Studiosity/master

Include keydown event when unlocking audio

Author: goldfire

src/howler.core.js

@@ -392,6 +392,7 @@
           document.removeEventListener('touchstart', unlock, true);
           document.removeEventListener('touchend', unlock, true);
           document.removeEventListener('click', unlock, true);
+          document.removeEventListener('keydown', unlock, true);
 
           // Let all sounds know that audio has been unlocked.
           for (var i=0; i<self._howls.length; i++) {
@@ -404,6 +405,7 @@
       document.addEventListener('touchstart', unlock, true);
       document.addEventListener('touchend', unlock, true);
       document.addEventListener('click', unlock, true);
+      document.addEventListener('keydown', unlock, true);
 
       return self;
     },