Generate jekyll site
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Fail build if jekyll site generation fails
Merge pull request #1 from burkemw3/master

Fail build if jekyll site generation fails
Merge remote-tracking branch 'upstream/master'
Merge heroku-buildpack-ruby v20 changes
Merge branch 'master' of github.com:mattmanning/heroku-buildpack-ruby-jekyll
Merge remote-tracking branch 'upstream/master'
output error info for debugging
Merge pull request #2 from lyoshenka/master

Show Jekyll error output
Write a README for *this* buildpack
Merge pull request #3 from burkemw3/master

Add a more relevant README file
Merge changes from official Ruby buildpack.
Minor README edits.
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' of github.com:mattmanning/heroku-buildpack-ruby-jekyll
Merge branch 'master' of github.com:heroku/heroku-buildpack-ruby