Merge pull request #30 from fusion94/master

Hack to get stats in tagline showing
Updated Rakefile with namespaces for commands
Add dependencies to a Gemfile
Added contribution guidelines
Added link to contribution guidelines in sidebar
Ignore .bundle
Updated about page to link to contribution guide
Exclude Rakefile, Gemfile, etc. from site build
Update CONTRIBUTION.md with correct rake command
Merge pull request #31 from atom-themes/contribution-workflow-improvements

Contribution workflow improvements
Update _config.yml
Add's some basic SEO to the site Fixes #28