Default and JUnit reporter updates

Tweaking output of the DefaultReporter and JUnit Reporters to be more useful.
Merge branch 'junit_reporter' of https://github.com/sethmcl/venus

* 'junit_reporter' of https://github.com/sethmcl/venus:
  Default and JUnit reporter updates

Conflicts:
	examples/11-NestedDescribesMocha/specs/GreeterTwo.spec.js
	lib/executor.js
	lib/reporters/JUnitReporter.js