Clarify the licensing terms

As per the contract, Vasek's contributions are owned by FIT CVUT. CESNET
of course owns my stuff, and the result is available under the terms of
Apache 2.

Change-Id: I868f87496158597df65f6086fbacdf3c60295efd
diff --git a/README.md b/README.md
index 68821ec..a38ab68 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,7 @@
 
 ## Credits
 
-This project is maintained by CESNET.
+Copyright © Faculty of Information Technology, Czech Technical University in Prague, https://fit.cvut.cz/ .
+Copyright © CESNET, https://www.cesnet.cz/ .
+Most of the code was written by Václav Kubernát (FIT ČVUT) and Jan Kundrát (CESNET).
+The project is distributed under the terms of the Apache 2.0 license.
diff --git a/src/main.cpp b/src/main.cpp
index e94ede8..3742e47 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2018 CESNET, https://photonics.cesnet.cz/
+ * Copyright (C) 2018 FIT CVUT, https://fit.cvut.cz/
  *
  * Written by Jan Kundrát <jan.kundrat@cesnet.cz>
  *
diff --git a/tests/dummy.cpp b/tests/dummy.cpp
index 481c155..b49ebd7 100644
--- a/tests/dummy.cpp
+++ b/tests/dummy.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2018 CESNET, https://photonics.cesnet.cz/
+ * Copyright (C) 2018 FIT CVUT, https://fit.cvut.cz/
  *
  * Written by Jan Kundrát <jan.kundrat@cesnet.cz>
  *