Add in a description for the 'public' tasks so they show up in rake -T.
Add in a description for the 'public' tasks so they show up in rake -T.

codescrum/sage_pay_ruby1.9.2_rails3.2,simplybusiness/sage_pay,jairodiaz/sage_pay,taw/sage_pay,simplybusiness/sage_pay,mathie/sage_pay