Add py34 to tox.ini.
Add py34 to tox.ini.

mmetak/streamlink,flijloku/livestreamer,beardypig/streamlink,sbstp/streamlink,chhe/streamlink,chhe/livestreamer,fishscene/streamlink,streamlink/streamlink,blxd/livestreamer,lyhiving/livestreamer,hmit/livestreamer,melmorabity/streamlink,Feverqwe/livestreamer,okaywit/livestreamer,mmetak/streamlink,chhe/livestreamer,ethanhlc/streamlink,caorong/livestreamer,Klaudit/livestreamer,javiercantero/streamlink,Saturn/livestreamer,Dobatymo/livestreamer,fishscene/streamlink,intact/livestreamer,gravyboat/streamlink,derrod/livestreamer,gravyboat/streamlink,back-to/streamlink,charmander/livestreamer,programming086/livestreamer,beardypig/streamlink,back-to/streamlink,jtsymon/livestreamer,charmander/livestreamer,hmit/livestreamer,Masaz-/livestreamer,ethanhlc/streamlink,streamlink/streamlink,lyhiving/livestreamer,jtsymon/livestreamer,okaywit/livestreamer,flijloku/livestreamer,Dobatymo/livestreamer,intact/livestreamer,programming086/livestreamer,wlerin/streamlink,blxd/livestreamer,sbstp/streamlink,wolftankk/livestreamer,chhe/streamlink,chrippa/livestreamer,gtmanfred/livestreamer,Klaudit/livestreamer,Saturn/livestreamer,gtmanfred/livestreamer,javiercantero/streamlink,Masaz-/livestreamer,bastimeyer/streamlink,derrod/livestreamer,wolftankk/livestreamer,bastimeyer/streamlink,melmorabity/streamlink,Feverqwe/livestreamer,caorong/livestreamer,wlerin/streamlink,chrippa/livestreamer