Travis tests complete for existing code

Extended Vagrantfile and test.sh
and added .travis.yml to add tests for:

* Ubuntu 12.04.3 x32
* Ubuntu 12.04.3 x64
* Debian 7.0 x64
* CentOS 6.4 x64
* Arch Linux 2013.05 x64
* Fedora 19 x64

Each tested with:
* chef_solo (except arch which chef doesn't support)
* salt
* shell
* puppet

Added bootstrap scripts as needed;

Added comments to README on user id / api_key vars for testing forks;