Put v2 alpha 2 in main Readme
Typo
Implement support for getting repo by id

This allows the Github class to retrieve repos by either their full name
or id. If the user passes in an id for a repo which doesn't exist or in which
they don't have sufficient permissions, an UnknownObjectException will
be raised. This addresses issue #245.
Merge branch 'develop' of https://github.com/tylertreat/PyGithub into develop
Acknowledge some lack of test coverage