This class exports one function when you use it, C<class_has()>. This
works exactly like Moose's C<has()>, but it declares class attributes.
-Own little nit is that if you include C<no Moose> in your class, you
+One little nit is that if you include C<no Moose> in your class, you
won't remove the C<class_has()> function. To do that you must include
C<no MooseX::ClassAttribute> as well.