More usage examples have been provided, and the quickstart shows an example of a test failure (as opposed to a test error).
The assertEquals tag now takes an optional attribute, caseSensitive, which defaults to "No". If you supply the attribute with the value "Yes", the comparison of expected and actual will be case-sensitive.
I started working on the documentation last night and got carried away and made more headway than I thought I would. I have put the beginnings of a project website up at http://coldunit.sourceforge.net. It includes the beginnings of documentation. I also finished the code cleanup I promised to do yesterday.
I have had one request for documentation on how to use ColdUnit. Along with cleaning up the code base, I hope to have some basic documentation checked in by early next week.