Fixed #15, Exclude support of Audio Data API. use Web Audio API instead.

- remove TypedArray polyfill (for IE9)
- remove Audio Data API support
- fix WebAudioAPI support (add Firefox/Opera)
- build v14.05.15
- README++
Merge pull request #16 from mohayonao/fix-15

Fixed #15, Exclude support of Audio Data API. use Web Audio API instead.