README: add copyright text.

Signed-off-by: Patrick Vacek <patrickvacek@gmail.com>

README.md

@@ -27,3 +27,8 @@ You can see examples of the first two approaches in [the linux-raspberrypi bbapp
 | RPI_WIFI_SSID | N/A| ID of a wireless network to connect to. Be aware this is case sensitive! Mandatory if RPI_WIFI_ENABLE is "1". |
 | RPI_WIFI_PWD | N/A |  Password for a connection to a wireless network. |
 
+## License
+
+This code is licensed under the [Mozilla Public License 2.0](LICENSE), a copy of which can be found in this repository. All code is copyright HERE Europe B.V., 2016-2019.
+
+We require that contributors accept the terms of Linux Foundation's [Developer Certificate of Origin](https://developercertificate.org/). Please see the [contribution instructions of aktualizr](https://github.com/advancedtelematic/aktualizr/blob/master/CONTRIBUTING.md) for more information.