DOC Deploy master docs to docs-master.

Author: twiecki

.travis.yml

@@ -39,5 +39,5 @@ script:
   - . ./scripts/confirm_mpl_optional.sh
 
 after_success:
-  - if [[ "$BUILD_DOCS" == "true" ]]; then travis-sphinx deploy -c "docs.pymc.io"; fi
+  - if [[ "$BUILD_DOCS" == "true" ]]; then travis-sphinx deploy -c "docs-master.pymc.io"; fi
   - coveralls