Check if the buildpack left behind an environment for subsequent ones
Use 'export' file in the buildpack's dir
Run sub-compile scripts in the same directory that compile was run in.

Previous code was changing the directory to the checked out buildpack.
This means the directory is different depending on if it was used by
Heroku directly or used by multi.
pass the new envfile argument to compile
show users to use tags; encouraging use of version pinning
Merge pull request #22 from kennethreitz/patch-1

show users to use tags; encouraging use of version pinning
Merge pull request #21 from zeke/master

pass the new envfile argument to compile
Don't echo the ugly release script.
Merge pull request #27 from kennethreitz/patch-1

Don't echo the ugly release script.
get sub modules
Update compile
Merge pull request #32 from Orange-OpenSource/master

Add compatibility with gitsubmodules
Revert "Merge pull request #32 from Orange-OpenSource/master"

This reverts commit 5abe6d12540ecf3fee6813d6545a4a077c6a4a3c, reversing
changes made to d5b4b977e515c51f23c6853107b03b6cd5ee53c2.
Merge pull request #20 from mkleehammer/master

Run sub-compile scripts in the same directory that compile was run in.
Merge pull request #18 from mojodna/build-env

Merge buildpack build environments
Revert "Run sub-compile scripts in the same directory that compile was run in."

This reverts commit 63ee14801acd198e194f770948f1f38df85bfe28.
mit license