[gparted] Update README with the inclusion of Google Test framework (#781978)

[Curtis Gedak <gedakc src gnome org>]

commit cbab9849b1140b7c55a06ef0db86f3806fcf55a7
Author: Mike Fleetwood <mike fleetwood googlemail com>
Date:   Wed Apr 26 17:54:56 2017 +0100

    Update README with the inclusion of Google Test framework (#781978)
    
    Document the files and license of the Google Test C++ test framework.
    
    Bug 781978 - Add Google Test C++ test framework

 README |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/README b/README
index 9c4b2e8..4837f2d 100644
--- a/README
+++ b/README
@@ -30,9 +30,14 @@ the GPLv2+ unless explicitly licensed otherwise.
 The GParted Manual is released under the GNU Free Documentation License
 version 1.2 or any later version.  (GFDLv1.2+).
 
+Google Test C++ test framework is released under the 3-Clause BSD
+License.  (BSD-3-Clause).
+
 See these files for more details:
    COPYING      - GNU General Public License version 2
    COPYING-DOCS - GNU Free Documentation License version 1.2
+   lib/gtest/LICENSE
+                - 3-Clause BSD License
 
 
 NEWS
@@ -182,6 +187,9 @@ help     - contains GParted Manual and international translations
 
 include  - contains source header files
 
+lib/gtest
+         - contains Google Test C++ test framework libraries
+
 m4       - contains macro files
 
 po       - contains international language translations