try latest version of ford for documentation.

Author: jacobwilliams

.travis.yml

@@ -68,8 +68,7 @@ install:
   - pip install --upgrade pygooglechart
   - pip install --upgrade graphviz
   - (pip install --upgrade FoBiS.py==2.2.8 && FoBiS.py --version)
-  - (pip install --upgrade ford==5.0.6 && ford --version)
-  - (pip install --upgrade markdown==2.6.9)
+  - (pip install --upgrade ford==6.0.0 && ford --version)
   - (pip install --upgrade git+https://github.com/dmeranda/demjson.git && jsonlint --version)
 
 before_script: