Bundler 1.4.0.pre.1, set parallel install to 2
git fixes sin Bundler 1.4.0.pre.2
need to invalidate the CloudFront cache first, default to S3 for now
instrument bundler to stdout
try -j4
fix sqlite3 error detection for bundler 1.4.0
set the buildpack version to branch name
bundler 1.4.0.rc.1
remove timing info
move benchmark require to top
if buildpack version is 0, should not clear the cache