Merge pull request #24 from sudorandom/update-1

Adds root version endpoint for keystone (for SL driver)
Merge pull request #26 from sudorandom/dupe-flavor

Filters Default Flavor from detailed listing
Merge pull request #30 from sudorandom/instance_actions_redo

Instance actions redo
server personality + user_data support
Merge pull request #33 from bodenr/feature/usermeta

server personality + user_data support
Adds pylint to testing. Travis now uses tox. Adds test-requirements.txt