Merge branch 'master' of github.com:goldfire/howler.js

Author: goldfire

src/howler.core.js

@@ -277,6 +277,7 @@
         aac: !!audioTest.canPlayType('audio/aac;').replace(/^no$/, ''),
         caf: !!audioTest.canPlayType('audio/x-caf;').replace(/^no$/, ''),
         m4a: !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),
+        m4b: !!(audioTest.canPlayType('audio/x-m4b;') || audioTest.canPlayType('audio/m4b;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),
         mp4: !!(audioTest.canPlayType('audio/x-mp4;') || audioTest.canPlayType('audio/mp4;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, ''),
         weba: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, ''),
         webm: !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, ''),