Merge pull request #1 from AMReX-Codes/mwm/sphinx_rtd_theme

  - 3.6

install:

  - pip install --user sphinx  # sphinx_rtd_theme

    # pypi's sphinx_rtd_theme is outdated. Internet recommends using current

    # master. Note: at some point, it will be OK to add `sphinx_rtd_theme` to

    # the `pip install` above => remove line below:

  - python -m pip install --user https://github.com/rtfd/sphinx_rtd_theme/archive/master.zip -U

  - python -m pip install --user sphinx sphinx-rtd-theme

script: bash ./build_and_deploy.sh