README: Add "Copyright and license" section.

diff --git a/README b/README
index 05ed12a1d41ca964af953c10f0e16e06eb583972..18a3e5f9970c12ec556b8b0991251b6624474a88 100644 (file)
--- a/README
+++ b/README
@@ -55,6 +55,19 @@ See INSTALL or the following wiki page for more (OS-specific) instructions:
  http://sigrok.org/wiki/Building
 
 
+Copyright and license
+---------------------
+
+sigrok-gtk is licensed under the terms of the GNU General Public License
+(GPL), version 3 or later.
+
+While some individual source code files are licensed under the GPLv2+, and
+some files are licensed under the GPLv3+, this doesn't change the fact that
+the program as a whole is licensed under the terms of the GPLv3+.
+
+Please see the individual source files for the full list of copyright holders.
+
+
 Mailing lists
 -------------