[ci] Update .travis-ci to skip install block. (#170)
[ci] Update .travis-ci to skip install block. (#170)

Ref https://github.com/gorilla/mux/commit/12a13f34e4fd6f7c8cbd499c446bded8d09ad8ad#commitcomment-17371551
Gorilla/mux,kiip/mux,gorilla/mux