Update README.md regarding licenses

README.md

@@ -18,9 +18,9 @@ Current projects include:
 [<img src="https://i.creativecommons.org/l/by-sa/4.0/80x15.png" alt="Image Licensed under CC-BY-SA" align="right">](/common/CC-BY-SA-3.0.txt)
   
 ---
-These documents are free software; you can redistribute them and/or
-modify them under the terms and conditions of the following licenses:  
-- \*.tex, \*.pdf: documentation and slides  
+These documents are free software; you can redistribute them and/or modify them 
+under the terms and conditions of the following licenses, unless otherwise noted:  
+- \*.tex, \*.pdf, \*.jpg, \*.png, \*.svg: documentation, presentation slides and original images.  
   - either the GNU General Public License, version 3 or, at your option, any later version,  
   - or the Creative Commons Attribution-ShareAlike 3.0 Unported License