fix for issue #402, not require module expect on referee.expect call
node.js version info deleted
1.1.0
Replacing message formats to be ${stringKey} rather than ${numberIndex} based
Do not pre-format customMessage - do it during the final interpolation
Refactoring exception assertion to go via defineAssertion(), so that we can have one less method for fail()ing (i.e. this.fail() or referee.fail() should be used)