set min username length to 4
typo: must be >= 4
Merge pull request #631 from opdemand/add-custom-user-auth

set min username length to 4
update registry submodule
Merge pull request #633 from opdemand/update-registry

update registry submodule
bump registry submodule
Update submodule SHAs.
fix versioning typo for docs
added documentation on the default attributes
pin ruby to 2.0.0
Merge pull request #634 from opdemand/cookbook-docs

This looks great.
added rsyslog export documentation
Updated docs_requirements.txt, fixed warnings and api.admin docs.
changed title to "Manage the Controller"
Merge pull request #637 from opdemand/sphinx-cleanup

Updated docs_requirements.txt, fixed warnings and api.admin docs.
Merge pull request #636 from opdemand/rsyslog-docs

Add rsyslog export documentation
Updated submodule SHAs.
Updated CLI binary locations in README.rst.
Switch master to v0.6.0.
import submodules into project