Can't find the Roller URL

[Totally Anon]

I'm running Roller on Tomcat7 on Ubuntu 14.04 and it looks like it's 
successfully installed with no errors.  I see that the war deployed and 
I see it running under the tomcat manager.   I also successfully got 
through the wizard to set up my first account.

But, when I try to hit http://host/roller I get 404 errors now.  I'm set 
up for a single user at the root, but that's not working either.  I 
don't see any error messages in my logs so I'm assuming I'm screwin gup 
the URL somehow.  Any clues?

Note, I'm perfectly find with blowing away the installation if you can 
tell me what the directories/files are I need to delete to start over.