Update CONTRIBUTING docs for better PRs.
Print better messages for detached server. Mute output on detach.
Cleanup newlines in Commands::Serve
Merge pull request #1537 from mojombo/better-pr

Update CONTRIBUTING docs for better PRs
Update history to reflect merge of #1537
Update Contributing page in the docs to match the new CONTRIBUTING.markdown. #1537.
Update JekyllImport::WordPress instructions on docs site.

Closes #1548.
Merge pull request #1518 from mojombo/fix-serve-detatch

Print better messages for detached server. Mute output on detach.
Update history to reflect merge of #1518
Fix site:releases:new rake task.
Update the History file
Add release post.
Update docs/history.md for v1.2.1
Update gemspec & version to v1.2.1
Merge pull request #1551 from mojombo/release-1-2-1

Release v1.2.1
Release 1.2.1