Add a license file

We agreed on wayland/ci-templates#1
that it should be MIT.

Fixes #1
29 jobs for master in 11 minutes and 46 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Bootstrapping
passed #380977
bootstrap

00:01:05

 
  Arch Container Build
passed #380978
arch@container-build

00:02:23

passed #380979
arch-forced@container-ifnot-exists

00:00:45

 
  Arch Check
passed #380980
arch@check

00:00:27

passed #380982
arch@container-ifnot-exists

00:00:26

passed #380981
arch-forced-ifnot-exists@check

00:00:40

 
  Ubuntu Container Build
passed #380985
ubuntu:18.04@container-build

00:01:05

passed #380983
ubuntu:18.10@container-build

00:01:09

passed #380984
ubuntu-forced:18.10@container-ifnot-exists

00:00:27

 
  Ubuntu Check
passed #380989
ubuntu:18.04@check

00:00:15

passed #380986
ubuntu:18.10@check

00:00:20

passed #380988
ubuntu:18.10@container-ifnot-exists

00:00:40

passed #380987
ubuntu:forced-ifnot-exists@check

00:00:21

 
  Debian Container Build
passed #380992
debian:buster@container-build

00:01:10

passed #380991
debian-forced:stretch@container-ifnot-exists

00:00:33

passed #380990
debian:stretch@container-build

00:01:09

 
  Debian Check
passed #380996
debian:buster@check

00:00:15

passed #380994
debian:forced-ifnot-exists@check

00:00:22

passed #380993
debian:stretch@check

00:00:15

passed #380995
debian:stretch@container-ifnot-exists

00:00:18

 
  Fedora Container Build
passed #380997
fedora:29@container-build

00:02:17

passed #380999
fedora-forced:rawhide@container-ifnot-exists

00:00:35

passed #380998
fedora:rawhide@container-build

00:02:59

 
  Fedora Check
passed #381000
fedora:29@check

00:00:22

passed #381004
fedora:29-upstream@container-ifnot-exists

00:00:19

passed #381002
fedora-forced-ifnot-exists:rawhide@check

00:00:17

passed #381001
fedora:rawhide@check

00:00:28

passed #381003
fedora:rawhide@container-ifnot-exists

00:00:21

 
  Container Push
passed #381005
bootstrap-push@push

00:00:17