message: Use CMake command-line tools in Travis script
diff: @@ -17,7 +17,6 @@ script:
  - mkdir build
  - cd build
  - cmake -DMATERIALX_BUILD_PYTHON=ON ..
  - - make -j4 install
  - - python ../python/MaterialXTest/main.py
  - - cd source/MaterialXTest
  - - ./MaterialXTest
  + - cmake --build . --target install -- -j4
  + - cmake -E chdir source/MaterialXTest ./MaterialXTest
  + - cmake -E chdir ../python/MaterialXTest python main.py
  