Switch to build sinon bower dep.
Add safari Karma launcher, upgrade JSON2.
Update history
Upgrade sinon to 1.9.0
Update notes.
Upgrade chai to v1.9.1
Update notes
Update Mocha to 1.18.2 and docs.
Merge pull request #15 from ryan-roemer/chore-sinon-upgrade

Upgrade mocha and chai.
Bump to v0.0.6