Refactored handshaker to not require the use of requests_oauthlib.  Also improved error handling and removed plain asserts.
Fixed some bugs that popped up after refactoring.
Cleanup of demo and REAME.rst
Added installation and compatibility details to REAMDE.rst
Added demo
Copy-paste demo into example for mwoauth.Handshaker
Pushed version number to 0.2.0
Aligned naming of tokens with OAuth spec. See http://oauth.net/core/1.0a/
Updated documentation for mwoauth module and in README.rst
Merge pull request #1 from halfak/master

Major (breaking) refactor for general compatibility and updated docs.