Updated setup.py to enable testing.
Added tests for the socket connection.
Added tests for the socket binding.
Made test_bind and test_connect files use pytest fixtures.
Added tests for the push pull pattern.
Added tests for the pair pattern.
Refactored request reply pattern methods. Now there are
request, listen_for_reply and request_and_listen. Also,
repReqClient was updated to comply with the new API. Finally, the
README file topic about the request reply pattern was updated.
Added tests for the request reply pattern.
Made setup.py test a shortcut for py.test.
Removed unnecessary code related to py.test from setup.py file.
Updated README file with instructions about how to run tests.
Merge pull request #7 from x8lucas8x/tests

Added tests and updated request reply pattern methods.