Updating tests.
Adding tox.ini file.
Adding nose as a dependency for tox tests.
Starting working on a major redesign.
Changes to the worker so that it can spawn a new process.
Adding task runners.
Added tests that use SQS as the backend if available.
Added test utils functions.
Updating Readme for 0.2
Adding pysqes commands.

Plus some worker fixes.
Updating read me for 0.2 release
Base command cleanup.
Merge branch 'develop' of github.com:sauramirez/pysqes into develop
Merge branch 'release/0.2'