DOC Add ReST long description. Closes #72.
DOC Add ReST long description. Closes #72.

YihaoLu/pyfolio,dursk/pyfolio,femtotrader/pyfolio,r0k3/pyfolio,raybuhr/pyfolio,yanheven/pyfolio,ChinaQuants/pyfolio,dursk/pyfolio,chayapan/pyfolio,YihaoLu/pyfolio,r0k3/pyfolio,ChinaQuants/pyfolio,quantopian/pyfolio,yanheven/pyfolio,femtotrader/pyfolio,raybuhr/pyfolio,sketchytechky/pyfolio,sketchytechky/pyfolio,quantopian/pyfolio