FollowOutput config option has been added

Prints the output to the console immediately, instead of displaying the
whole ouput at the end.
This can be useful -combining with debug: true- when there are many long
running tests.
Merge branch 'master' into follow-output

Conflicts:
	tasks/lib/phpunit.js
Merge pull request #11 from voidcontext/follow-output

FollowOutput config option