XB2

M3U8 demo show how to prase m3u8,download it,and play it through local httpserver

#important !!!!! just jump to 3rd tab to test m3u8 download and play.

Changelog:

20160225: 1、Project setting ，support Xcode7.2

2、Set NSAppTransportSecurity to support http

3、update m3u8 souceurl prase