Added 'must' methods to NoExceptionWord, ResultOfATypeInvocation and ResultOfAnTypeInvocation.
Rewritten GenMatchers.scala to include all tests file with name starts with Should, ListShould, EveryShould and OptionShould.
Added -z support to Framework.
Merge branch 'sbt-dash-z' of https://github.com/cheeseng/scalatest into 2.1.x