Move all the drivers outside Onitu's root
Add setup.py for Onitu
Convert README to rEST
Add LICENSE file
Export metadata about the project in __init__.py
Rewrite __main__ in order to be compatible with setuptools's console_script
Use entry_points to load drivers
Load tests helpers using entry_points
Package local_storage
Rewrite requirements.txt
Adapt tox.ini to the new architecture
Add license to Local Storage
Package Amazon S3
Package hubic driver
Package Dropbox driver
Update the README for the new architecture
Add a doc section in extra_requires. Add sphinxcontrib-httpdomain.
Merge pull request #100 from onitu/setuptools

New architecture with setuptools. Fix #18 and #4
Plug: Add a close handler
Raise EscalatorClosed after all ZMQErrors

Sometimes when closing the context of Escalator client
ZMQErrors were printed. This commits treat all ZMQErrors
as a reason to close the client.