Python scripts to access data from Github API v3 using PyGithub

Inspired from

For now get_repositories_details.py,get_issues_details.py and get_pr_details.py seems complete.

In all of the other scripts we are only getting objects, more options coming soon..

see http://pygithub.readthedocs.io/en/latest/apis.html for more options.

Suggestions, PRs and Issues are Welcome:)