update copyright in install.php

Signed-off-by: illori [email protected]

other/install.php

@@ -2156,7 +2156,7 @@ function template_install_below()
 		<div id="footer_section">
 			<div class="frame">
 				<ul class="reset">
-					<li class="copyright"><a href="http://www.simplemachines.org/" title="Simple Machines Forum" target="_blank" class="new_win">SMF &copy; 2011, Simple Machines</a></li>
+					<li class="copyright"><a href="http://www.simplemachines.org/" title="Simple Machines Forum" target="_blank" class="new_win">SMF &copy; 2013, Simple Machines</a></li>
 				</ul>
 			</div>
 		</div>