[gnome-getting-started-docs] Add attribution file for the samples.

[Jakub Steiner <jimmac src gnome org>]

commit 3062c54a685db45b94f45edf2aec7e8391c2a181
Author: Jakub Steiner <jimmac gmail com>
Date:   Mon Mar 11 12:59:15 2013 +0100

    Add attribution file for the samples.

 animation/snd/AUTHORS |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/animation/snd/AUTHORS b/animation/snd/AUTHORS
new file mode 100644
index 0000000..4400423
--- /dev/null
+++ b/animation/snd/AUTHORS
@@ -0,0 +1,4 @@
+drumloop — http://www.freesound.org/people/djduppy/sounds/23564/ (CCBY)
+keyboard — http://www.freesound.org/people/Analog%20Bleep%20Ten/sounds/75829/ (CCS+)
+mouse click — http://www.freesound.org/people/THE_bizniss/sounds/39562/ (CCBY)
+intro synth — http://www.freesound.org/people/Flick3r/sounds/45610/ (CCBY)