added some docstrings for the tests.
added some docstrings for the tests.

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