Add model classes
Use new model class
Fix flake8 issues.
Rename raxcli.model to raxcli.models.
Merge pull request #2 from racker/add_models

Add models
Add get_enum_as_tuples utility function.
Use TestRunner to run the tests.
Merge remote-tracking branch 'origin/master' into features/compute

Conflicts:
	raxcli/apps/monitoring/resources.py
merge with upstream refactor