Added QuickCheck as a dependency, in order to write QuickCheck properties.
Added QuickCheck as a dependency, in order to write QuickCheck properties.

Because QuickCheck 2.1.0 is the first version on Hackage after 1.2.0.1 and
2.9.2 is the current latest release, I've set it as '>= 2.1 && < 3.0'.

ploeh/dependency-rejection-samples,ploeh/dependency-rejection-samples,ploeh/dependency-rejection-samples