Added README for the test suite.
Added README for the test suite.

bschaef14/learntris,mosegontar/learntris,SultansDream/testris,nbgraham/learntris,lochanaeg/learntris,Larsharaldjoh/Tetris,tangentstorm/learntris,Shamash2014/spice_and_html,Shamash2014/spice_and_html,DTSCode/learntris-haskell,WhitmanH/learntris,geugon/learntris,bschaef14/learntris,BigRoss/learntris,TylerLau/learntris,Shamash2014/spice_and_html,LearnProgramming/learntris,bschaef14/learntris,TylerLau/learntris,BigRoss/learntris