Fixes not defaulting to NODE_ENV=production during runtime
Supports WEB_CONCURRENCY for Performance-M dynos
Defaults node environment to 'production'; bugfixes
- Fix runtime signature cache invalidation
- Provide error messaging for un-downloadable binaries
- Default to NODE_ENV=production for both build and runtime
- heroku#60
Npm bootstrapping skipped when using iojs.
- Fixes heroku#202
Refactor to bring caching logic to the forefront.
- Fixes cachDirectories issues
- Addresses heroku#231
- Addresses heroku#226
- Simplifies detect (package.json required)
Updated build failure and help messaging.
Updated messaging.
Disables cache restoration if node_modules already exists.
Accepts cacheDirectories array in package.json to override default node_modules caching.