RecordRTC v5.1.9

This release adds following features:

1. new mimeType parameter
2. new bitsPerSecond parameter
3. new audioBitsPerSecond parameter
4. new videoBitsPerSecond parameter
5. CanvasRecorder.js is updated to support canvas.captureStream — however its still experimental feature.
6. A new file is added: dev/GetRecorderType.js
7. A new file is added: dev/RecordRTC-Configuration.js

And some documentation improvements for the domain http://RecordRTC.org