[gnome-backgrounds] Add CCBY2 for Stones.jpg

[Jakub Steiner <jimmac src gnome org>]

commit 33848d1b39a60a449cf8facac3b3f51460a7811e
Author: Jakub Steiner <jimmac gmail com>
Date:   Fri Sep 12 10:57:16 2014 +0200

    Add CCBY2 for Stones.jpg
    
    Also removed the note about attribution since individual
    attribution is more applicable here.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=735803

 COPYING_CCBY2   |    4 ++++
 COPYING_CCBYSA2 |    3 ---
 COPYING_CCBYSA3 |    3 ---
 3 files changed, 4 insertions(+), 6 deletions(-)
---
diff --git a/COPYING_CCBY2 b/COPYING_CCBY2
new file mode 100644
index 0000000..745f479
--- /dev/null
+++ b/COPYING_CCBY2
@@ -0,0 +1,4 @@
+This work is licenced under the Creative Commons Attribution 2.0
+United States License. To view a copy of this licence, visit
+http://creativecommons.org/licenses/by/2.0/ or send a letter to Creative
+Commons, 171 Second Street, Suite 300, San Francisco, California 94105, USA.
diff --git a/COPYING_CCBYSA2 b/COPYING_CCBYSA2
index 35a0849..fb49032 100644
--- a/COPYING_CCBYSA2
+++ b/COPYING_CCBYSA2
@@ -2,6 +2,3 @@ This work is licenced under the Creative Commons Attribution-Share Alike 2.0
 United States License. To view a copy of this licence, visit
 http://creativecommons.org/licenses/by-sa/2.0/ or send a letter to Creative
 Commons, 171 Second Street, Suite 300, San Francisco, California 94105, USA.
-
-When attributing the artwork, using "GNOME Project" is enough. 
-Please link to http://www.gnome.org where available.
diff --git a/COPYING_CCBYSA3 b/COPYING_CCBYSA3
index fc45d78..dab313d 100644
--- a/COPYING_CCBYSA3
+++ b/COPYING_CCBYSA3
@@ -2,6 +2,3 @@ This work is licenced under the Creative Commons Attribution-Share Alike 3.0
 United States License. To view a copy of this licence, visit
 http://creativecommons.org/licenses/by-sa/3.0/ or send a letter to Creative
 Commons, 171 Second Street, Suite 300, San Francisco, California 94105, USA.
-
-When attributing the artwork, using "GNOME Project" is enough. 
-Please link to http://www.gnome.org where available.