update Rakefile to run test_units with the new test task
update Rakefile to run test_units with the new test task

brynary/webrat,djanowski/webrat,irfanah/webrat,djanowski/webrat,jacksonfish/webrat,johnbintz/webrat,jacksonfish/webrat,brynary/webrat,johnbintz/webrat,irfanah/webrat,irfanah/webrat,m3talsmith/webrat,m3talsmith/webrat