upgrade to bundler 1.3.2
bump to v54
update changelog
Revert "upgrade to bundler 1.3.2"

This reverts commit 4091c08b58eecbbdff0288c8723522e9b08c541d.
bump to v55
update changelog
Revert "Revert "upgrade to bundler 1.3.2""

This reverts commit 3fc9718e47cff36e30acc4c305994cff75c19f14.
require psyched_yaml in the syck hack
ruby 1.8.7 doesn't autoload rubygems
bump to v56
update changelog
Update link to vulcan gem
Merge pull request #73 from sumbach/patch-1

Update link to vulcan gem in README
Merge remote-tracking branch 'heroku/master'
Fix failing spec after merge