build doc

Author: jlwalke2

.travis.yml

@@ -7,6 +7,7 @@ python:
 
 stages:
   - test
+  - build
   - deploy
 
 env:
@@ -20,6 +21,9 @@ script:
 
 jobs:
   include:
+    - stage: build
+      install: pip install sphinx
+      script: sphinx-build -Ean -b html -j auto -D todo_include_todos=0 ./doc ./doc/_build/html
     - stage: deploy
       script: echo "deploying"