downgrade to 1.25.14
add 0.13.1 to the sbt versions
don't install the latest rvm minor for now
update to node 0.10.25
Update cassandra to 2.0.5. Addresses https://github.com/travis-ci/travis-ci/issues/1960
Merge pull request #270 from BanzaiMan/ha-feature-cassandra_2.0.5

Update cassandra to 2.0.5.
Quick fix ChefSpec Tests by freezing Chef 11.8 dep

We'll check later how the ChefSpec examples should be
re-written to properly integrate with Chef 11.10+
Support PHP 5.6.0alpha2.
Support HHVM 2.4.1.