Fixes pull_requests_comments missing options
Merge pull request #276 from jsntsay/master

Added missing options parameter to pull_requests_comments()
Add documentation for state option for update_issue
Merge pull request #277 from mouse-lin/master

encode url, fetch data form correct url dont raise invalid url
Merge pull request #278 from bcardarella/master

Update Documentation for state option on update_issue
Updates from master