Merge pull request #693 from mosdef-hub/692-rtd-build

Build readthedocs

Author: mattwthompson

.travis.yml

@@ -29,6 +29,3 @@ install:
 
 script:
   - python -m pytest -v --nbval --nbval-lax --cov=mbuild --cov-report= --pyargs mbuild
-
-after_success:
-  - if [[ $PYTHON_VERSION == 3.7 ]] && [[ "$TRAVIS_OS_NAME" == "linux" ]]; then source devtools/travis-ci/update_gh_pages.sh; fi