Add libcurl4-openssl-dev
wait for tar to complete before committing interim image

this fixes 'cp: cannot stat /app: No such file or directory' during /build/builder execution
Merge pull request #29 from ericreid/master

Add libcurl4-openssl-dev
Merge pull request #32 from opdemand/fix-tar-race

wait for tar to complete before committing image
Add static buildpacks
Merge pull request #34 from Kloadut/static

Add static buildpacks
Add libjpeg and libpng shared libraries

This is necessary for my PHP build pack (http://github.com/CHH/heroku-buildpack-php) to run.
Merge pull request #35 from CHH/patch-1

Add libjpeg and libpng shared libraries
Revert "Use forked PHP buildpack."

This reverts commit 648ff738642867e1a81c9f267765731140aa3a36.
Merge branch 'master' of https://github.com/progrium/buildstep