Merge pull request #2 from shanereid/develop

Develop
Merge pull request #3 from shanereid/develop

feat(core): add release & content API support
chore(repo): save setup.py
Changed repo url
Merge branch 'master' of github.com:shanereid/python-github3 into HEAD
Merge branch 'develop' of github.com:shanereid/python-github3 into HEAD