moves bucket config into grunt file, adds some constants for long and short caching cache control headers
Updating alpha4 min build file
Merge branch 'v2.0' into v2.0-update-picture-example
Getting cache headers working correctly.
Small fixes
Merge pull request #175 from mobify/v2.0-gruntify-jekyll-fixes

V2.0 gruntify jekyll fixes
Merge remote-tracking branch 'origin/v2.0' into v2.0-update-picture-example