Merge pull request #22 from sunloverz/v3

V3
added correction for readme and setup.py files. To install iron_mq_v3 with pip, run this command: pip install iron-mq-v3
Merge pull request #26 from ulandj/v3

added correction for readme and setup.py files.
old class style changed to new style
Merge pull request #28 from ulandj/v3

old class style changed to new style
Merge remote-tracking branch 'upstream/v3' into v3