configure now checks for the existence of vrinstall before trying to …

…run it, which will prevent an error if the Simulink 3D animation toolbox is not available.

git-svn-id: https://svn.csail.mit.edu/locomotion/robotlib/trunk@5495 c9849af7-e679-4ec6-a44e-fc146a885bd3

configure.m

@@ -145,7 +145,11 @@ function configure(options)
     disp(' SNOPT not found.  SNOPT support will be disabled.  To re-enable, add the SNOPT matlab folder to your path and rerun configure.  SNOPT can be obtained from https://tig.csail.mit.edu/software/ .');
 end
 
-conf.vrml_enabled = logical(vrinstall('-check'));
+if(exist('vrinstall'))
+    conf.vrml_enabled = logical(vrinstall('-check'));
+else
+    conf.vrml_enabled=0;
+end
 
 conf.sedumi_enabled = logical(exist('sedumi'));
 if (conf.sedumi_enabled)