User guide: update last changed date

doc/userguide/UserGuide.tex

@@ -40,7 +40,7 @@ pdftex}
 
 \title{Dynare v4 - User Guide \\Public beta version}
 \author{\\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\  Tommaso Mancini Griffoli\\ tommaso.mancini@stanfordalumni.org}
-\date{This draft: June 2010}
+\date{This draft: August 2011}
 
 \maketitle
 
@@ -50,7 +50,7 @@ pdftex}
 
 ~\vfill
 
-Copyright  2007-2010 Tommaso Mancini Griffoli
+Copyright  2007-2011 Tommaso Mancini Griffoli
 
 \bigskip
 

license.txt

@@ -120,7 +120,7 @@ License: GFDL-1.3+
  A copy of the license can be found at <http://www.gnu.org/licenses/fdl.txt>
 
 Files: doc/userguide/*.tex, doc/userguide/*.bib, doc/userguide/*.pdf
-Copyright: 2007-2010, Tommaso Mancini Griffoli
+Copyright: 2007-2011, Tommaso Mancini Griffoli
 License: GFDL-1.3+
  Permission is granted to copy, distribute and/or modify this document
  under the terms of the GNU Free Documentation License, Version 1.3 or