I trying to build app on rails that connect to salesforce
I follow up this link

http://wiki.developerforce.com/page/Getting_Started_with_the_Force.com_Toolkit_for_Ruby

but the app wont work
it give me this error on the page

Routing Error

uninitialized constant Salesforce::MerchandiseCsController

Try running rake routes for more information on available routes.

anyone can help please