Preserve ENV vars CPATH and CPPPATH (composable buildpacks)
update 'no version specified' devcenter url
Merge pull request #30 from davidjrice/preserve-env-vars

Preserve ENV vars CPATH and CPPPATH (composable buildpacks)
improve documentation in README
add a readme section for hackers
DRY up the hacking docs
ignore .DS_Store
use npm 1.3.x by default
slash and burn
move .profile.d stuff to .profile.d
move helpers to their own file
add json.sh
clean up readme
go on a diet
fetch node from s3pository
use absolute path for common.sh
use correct tar_download signature
use bin instead of node/bin
get the paths straight
build .profile.d on the fly