Revise DiscreteDP solution notebook
Revise DiscreteDP solution notebook

andybrnr/QuantEcon.py,andybrnr/QuantEcon.py,QuantEcon/QuantEcon.py,agutieda/QuantEcon.py,oyamad/QuantEcon.py,agutieda/QuantEcon.py,QuantEcon/QuantEcon.py,oyamad/QuantEcon.py