Merge pull request #26 from migueldvb/deploy

Change github repository to asdf-standard
Fix building on Python 3.  Fix #27.
Fix .travis.yml
Install YAML on Travis
Install enumitem
Merge pull request #29 from mdboom/python3-build

Fix building on Python 3.  Fix #27.
Add ly1
Add six to dependencies
Add the six and pyyaml dependencies