Update setup.py

testing failed Windows install: hard-coded version# and pluralized `tests_require`
Update MANIFEST.in

Seems Windows can't handle a trailing slash in a path name use like this. Found by way of http://code.google.com/p/py-amqplib/source/detail?r=6d296f64a9a4 and http://code.google.com/p/py-amqplib/issues/detail?id=42
Update setup.py

go back to determining version # dynamically
Merge pull request #129 from maphew/master

fix windows install error