reindent travis file and add g++4.8 (for c++11)
reindent travis file and add g++4.8 (for c++11)

Green-Star/PeerTube,Green-Star/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube,Chocobozzz/PeerTube,Green-Star/PeerTube,Chocobozzz/PeerTube,Chocobozzz/PeerTube