message: Try to fix travis on macOS
diff: @@ -34,6 +34,8 @@ before_install:
  if test -e /Applications/CMake.app; then
  sudo rm -rf /Applications/CMake.app
  fi
  + command curl -sSL https://rvm.io/mpapis.asc | gpg --import -
  + rvm get stable
  sudo cp -r cmake-${CMAKE_VER}-Darwin-x86_64/CMake.app /Applications/
  sudo /Applications/CMake.app/Contents/bin/cmake-gui --install
  popd
  