Libgreader

* Added project to PyPi, moved to real Python project structure
* Style cleanup, more tests

Lot of improvements :

* Manage special feeds (reading-list, shared, starred, friends...)
* Manage categories (get all items, mark as read)
* Manage feeds (get items, unread couts, mark as read, "fetch more")
* Manage items (get and mark read, star, share)

and:

* oauth2 not required if you don't use it
* replacing all xml calls by json ones

* All requests to Google use HTTPS
* CLeaned up formatting, should mostly meet PEP8
* Fixed random unicode issues
* Added licensing

* Moved all get requests to private convenience method
* Added a few more basic data calls

* Connects to GR and receives auth token correctly.
* Pulls down subscription list.