Added 'xterm-256color' in list of supported terms
Chainable JSGI response helper
Removes helpers and uses Object.defineProperty()
Adds tests for JsgiResponse
Adds static helpers and more tests
check contentBytes before apply decodeToString method to prevent an exception from throw when an empty http body was returned.  also this is an effort to allow http test to pass issue 212 on github
in response to the failed test case testToISOString . java format ISO string when in GMT timezone(Expected "2013-02-21T19:09:24+00:00", got "2013-02-21T19:09:24-00:00") with + sign to indicate timezone
added `sendBinary(bytearr[, offset, length])` method to websocket implementation