Added hyphens when listing unsatisfied expectations, satisfied expectations and states, so that the regular expression in TextMate's Ruby bundle run_script.rb doesn't mistake a Mocha error message for a stack trace line.
Added hyphens when listing unsatisfied expectations, satisfied expectations and states, so that the regular expression in TextMate's Ruby bundle run_script.rb doesn't mistake a Mocha error message for a stack trace line.

alloy/mocha,travis-repos/mocha,10io/mocha