Update README.md

Author Anne Jan Brouwer <brouwer@annejan.com>
Author date 2016-03-16 21:41:38
Author local date 2016-03-16 22:41:38 +0100
Committer Anne Jan Brouwer <brouwer@annejan.com>
Committer date 2016-03-16 21:41:38
Committer local date 2016-03-16 22:41:38 +0100
Commit c7bdaef84a4b768698ae62d94da8401d0fe44a57
Tree 16fc5b81cd9472f88022360f591c7cf8568c50f1
Parent 887c5014bd9f1e8f4dee8f2ad3cf5505141b7488
Update README.md