Merge pull request #33 from thomasandersen/master

Fixes #31
Merge pull request #34 from thomasandersen/master

Fx 26: use CSP category for logging. This removes the [Read me] link in ...
Adding apache 2 license
Merge branch 'master' of github.com:bekk/retire.js
Removing tmp module - moving to os.tmpdir() instead
Firefox: Make license consistent with the project's license