On my main index page, there is a blurb of text that describes a client. Currently, if you want to see client 38, you would use this url

http://www.domain.com/index/index/client/38

However, I would prefer if the url could be shorter, like this

http://www.domain.com/client/38

I know that I have to add a custom route, but I am not sure where to start.