Added doc generation to travis config (#274)

* added provider

* added basic config

* updated token

* added before_deploy

* updated branch

Author: ChrisTimperley

.travis.yml

@@ -14,6 +14,8 @@ script:
 - mypy src --ignore-missing-imports
 notifications:
   email: false
+before_deploy:
+- "(python setup.py docs && touch docs/_build/html/.nojekyll)"
 deploy:
 - provider: pypi
   user: ChrisTimperley
@@ -22,3 +24,10 @@ deploy:
   on:
     tags: true
     python: '3.6'
+- provider: pages
+  skip_cleanup: true
+  local_dir: docs/_build/html
+  github_token: "$GITHUB_TOKEN"
+  on:
+    branch: master
+    python: '3.6'