add a word on the logo licensing: CC-BY-SA-3.0

diff --git a/COPYING b/COPYING
index 6994750..54dd23d 100644 (file)
--- a/COPYING
+++ b/COPYING
@@ -10,6 +10,8 @@ Some perticular files distributed with the project have other
 licenses. More specifically, these files are listed below, along with
 their license.
 
+The SimGrid logo is distributed under the CC-BY-SA license.
+
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 We have embeded pcre 8.12 library into the windows installer.