Merge pull request #70 from rogaha/update_reviewers

Update reviewers command and its output format:
Make all the default so that it is faster
Add --mine flag to show only prs i care about
Merge pull request #73 from crosbymichael/make-all-default

Make all the default so that it is faster
Add state flag instead of closed
Add sort flag so we can sort by created, updated, and popularity
Merge pull request #75 from crosbymichael/change-state
Add colored display for pulls
Merge pull request #76 from crosbymichael/color-diff-display
- Added go routine to process the PRs that I care about