added travis build status badge fixes #74 (#76)
added travis build status badge fixes #74 (#76)


streamlink/streamlink,mmetak/streamlink,gravyboat/streamlink,ethanhlc/streamlink,back-to/streamlink,sbstp/streamlink,bastimeyer/streamlink,beardypig/streamlink,mmetak/streamlink,wlerin/streamlink,chhe/streamlink,gravyboat/streamlink,streamlink/streamlink,sbstp/streamlink,bastimeyer/streamlink,fishscene/streamlink,back-to/streamlink,javiercantero/streamlink,ethanhlc/streamlink,melmorabity/streamlink,beardypig/streamlink,javiercantero/streamlink,fishscene/streamlink,chhe/streamlink,wlerin/streamlink,melmorabity/streamlink