Add average model w/ promo (Sujan's model #1)
Add maximum model w/ promo (Sujan's model #2)
Make num. forecasted weeks a parameter
Merge pull request #10 from thierer1/dev

Add additional models, recommendations, and parameters
Merge pull request #11 from is603fa14/dev

Merge dev into master
Merge branch 'master' of github.com:is603fa14/is603-inventory-dss