Add workers tip in tutorial.rst
YAML syntax doc page
Rename NIMBUS_IP -> NIMBUS in docs
Rename nimbus_ip -> nimbus in StormCluster
Rename 'storm_cluster_ip' config var to 'nimbus'

Previously, we changed on the CLI option from --storm-cluster to --nimbus
without modifying pyleus.configuration.

This brings in sync the CLI option and config var.

Closes #2
Introduce --nimbus-host/--nimbus-port options

Closes #35
Add tests
Update README.rst and docs
Use print function
Python 2/3 StringIO compatibility
Add Storm release download note to docs/index.rst
Clean up redundant tox command
code-block:: shell -> none
Pin docs dep versions
Fix sys.version_info lookup for python 2
Merge pull request #38 from patricklucas/update_quick_start

Add Storm release download note to docs/index.rst
Merge pull request #39 from patricklucas/misc_build_cleanup

Misc build cleanup
Add comments about pyflakes appeasement
Update docs per review
Merge pull request #36 from patricklucas/add_nimbus_port_option

Add nimbus port option