Update travis config for CMake+ninja
Update travis config for CMake+ninja

Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone,Hiroyuki-Nagata/JaneClone