this brings haskall::default and haskall:multi inline
Merge branch 'master' of github.com:travis-ci/travis-cookbooks
drop haskell-platform from recipe[haskell::multi]
Merge pull request #243 from dmalikov/master

drop haskell-platform from recipe[haskell::multi]
install cabal-install from ppa (thanks @sol)
run cabal update once so that the correct dirs are created
oops, correct the ppa for cabal-install
make sure .cabal/bin is on the path
Introduce HHVM's cookbook.

The package recipe installs HHVM from the provided package repository.
The default recipe just refers to the package one.
Make HHVM available for phpenv.
Composer's config file needs to be created once only.
Install composer for HHVM.
Install phpunit for HHVM.
Download Cassandra from Apache archive

It serves all versions, not just the most recent
one.
Update changes.md
Move what's in production to separate section.
Install composer for HHVM only when necessary.
HHVM's version is now explicit.
Add a metadata.rb in HHVM's cookbook.
Merge pull request #245 from travis-ci/hhvm

Support for HHVM within the PHP VM