Call nomnom in a subprocess so that it doesn't break the build
Merge pull request #58 from heroku/shrinkwrap

:shipit:
Merge pull request #59 from heroku/clear-node-gyp-cache

clear caches before slug compilation
Merge pull request #64 from playlist-media/diet

Call nomnom in a subprocess so that it doesn't break the build
> dev/null was superfluous
improve compile comments
use the new semver.io/node/resolve/{range} URL syntax
Simplified caching strategy: If node_modules directory is checked into source control, rebuild any native deps. Otherwise, restore from the build cache.
Merge pull request #67 from heroku/simpler-caching

Simplified caching strategy
handle semver ranges that contain spaces
consolidate CONTRIBUTING.md into README and clean house.
add a section on legacy compatibility
Merge pull request #71 from heroku/diet

Ship the Diet Buildpack!
add empty bin/release file so as not to break things that expect it to be there
Merge pull request #72 from heroku/add-empty-release-file

add empty bin/release
Set default NODE_ENV to 'production'
add comment about npm executable
be more clear about the effect of `npm prune`
Make the caching messages more clear.
CONTRIBUTING.md doesn't exist anymore. Refer instead to README.md