Changes to support websockets binary frames

New property request property to specify websocket.binaryType
Disable text related processing when the response body s not string
WebSockets binary frames support

Avoiding unessesary processing when receiving binary data. Message size
tracking should not be used with binary data.
Changes as a result of a pull request discussion

Fixing a type.
Default value for webSocketBinaryType set to null to avoid changing the
default text mode processing.
Merge pull request #856 from aleksandarn/master

Changes to jquery.atmosphere.js in order to suppoer websockets with binary frames