Adding uml diagram
Removed Ingredients, Locations, and Books
Merge branch 'master' of https://github.com/Kae7in/cs373-idb into uml_design
Improved UML class diagram
Merge pull request #301 from Kae7in/uml_design

Uml design
Merge branch 'master' of github.com:Kae7in/cs373-idb into david-api