add checking to the claim length

1. add checking to the claim
2. add description for rspec for wikirate
3. add rspec test case
AH! this is much closer.

No need to abort, however.  you can just add an error.

Let's say you submit a form with 10 fields and the name is the first one.  If you abort, then wagn will exit out of the validation process completely right away and won't check any more fields. If you just add an error (errors.add...), it will continue checking all the other fields, so if you have 5 problems, you'll see them all.