Fix decode,encode mixup.
Docs improvements
Merge branch 'master' of https://github.com/idan/oauthlib
Wreaking havoc in the world of documentation
generate documentation from source files, part of #125
make example code parsable to enable syntax highlighting, closes #125
Merge pull request #126 from grunskis/master

Fixed issue #125 (Read the docs not generating docs from source)
OAuth 1 versus 2. Fix #118.
FatalClientError tests
Duplicate parameter checks & tests.
Unauthorized client tests.
Access denied test.
Response type tests.
Server error catching. Unavailability toggling.
Unsupported grant type tests.
Invalid grant tests.
Invalid client tests.
Invalid scope tests.
Extra credentials usage tests.
Invalidate auth code after use.