add branch_recent source
pass --count option to git for-each-ref
Merge pull request #3 from f110/pullreq/branch-recent

add branch_recent source
thanks!
Add pull_request source and kind
Fixed bug

- [Fixed] giti#branch#github_list_all()
  - Error occur given branch_name contains '/'
Improve pull_request source

- Append feature
  - Inputing issue number
  - Creating a new pull-request with vim
Fixed some behavior
Pesky message is houted down!!!