added myself (Felipe Coury) to AUTHORS
list currently supported buildpacks
upload script
creates .profile.d folder in build_root

I noticed not all buildpacks creates this folder,
the Heroku PHP Buildpack 
(https://github.com/heroku/heroku-buildpack-php)
for one expects it to be created.
added php buildpack
added support for Go buildpack

Go buildpack is unofficial and can be found here:
https://github.com/kr/heroku-buildpack-go
updated README, added info about PHP and Go support
fix typo
Add the Perl buildpack
Merge pull request #5 from lukec/master

Add Perl buildpack + fix typo
add myself to AUTHORS
Merge pull request #7 from lukec/master

Add myself to AUTHORS, at progrium's suggestion.
Merge branch 'master' of git://github.com/progrium/buildstep

Conflicts:
	stack/buildpacks.txt
	stack/packages.txt
new quantrade buildpack