use g++ 4.8 in travis
use g++ 4.8 in travis

jhuntoo/starhackit,FredericHeem/starhackit,jhuntoo/starhackit,jhuntoo/starhackit,FredericHeem/starhackit,FredericHeem/starhackit,jhuntoo/starhackit,FredericHeem/starhackit