Updates docstrings to match NumPy conventions.
Updates docstrings to match NumPy conventions.

jhillairet/scikit-rf,temmeand/scikit-rf,scikit-rf/scikit-rf,scikit-rf/scikit-rf,temmeand/scikit-rf,temmeand/scikit-rf,jhillairet/scikit-rf,jhillairet/scikit-rf