message: Extend Travis tests to Python and OS X
diff: -dist: trusty
  language: cpp
  -compiler:
  - - gcc
  - - clang
  +matrix:
  + include:
  + - os: linux
  + dist: trusty
  + compiler: gcc
  + - os: linux
  + dist: trusty
  + compiler: clang
  + - os: osx
  + compiler: gcc
  + - os: osx
  + compiler: clang
  script:
  - - mkdir build && cd build
  + - mkdir build
  + - cd build
  - cmake -DMATERIALX_BUILD_PYTHON=ON ..
  - - make -j4
  + - make -j4 install
  + - python ../python/MaterialXTest/main.py
  - cd source/MaterialXTest
  - ./MaterialXTest
  