Merge pull request #735 from btubbs/master

Add a Vagrantfile
Make note in readme for OSX users to fix 'too many clients already' error in test suite.
Merge pull request #740 from aisipos/master

Note in readme for OS X users how to fix 'too many clients' error when running tests.
Use 'gittip' role instead of 'vagrant'; #738

The makedb.sh script is set up to use this, so let's stick with it.
Merge branch 'master' of github.com:gittip/www.gittip.com
Move .puppet to puppet; #738

I'd prefer not to have this directory hidden.
Fix comment; #738
Set config.vm.box_url in Vagrantfile