Minor oversight: 'FreeBSD' should be 'bayes-scala'

It looks like a standard BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause).
However, I guess the reference to 'FreeBSD' in the additional disclaimer is a minor oversight.
Merge pull request #2 from BertrandDechoux/license-fix

Minor oversight: 'FreeBSD' should be 'bayes-scala'