updated documentation and name for NonlinearityLayer class based on feedback, made a minor fix to the docstring for DenseLayer
updated documentation and name for NonlinearityLayer class based on feedback, made a minor fix to the docstring for DenseLayer

cancan101/Lasagne,ebattenberg/Lasagne,mheilman/Lasagne,MihailoIsakov/fishfish,kracwarlock/Lasagne,dnuffer/Lasagne,rlkelly/Lasagne,DeanChan/Lasagne,gabortakacs/Lasagne,Richi91/nntools,ErnstHowie/Lasagne