Added simple greedy optimizer and abstract classes for revenue/cost models.

Fixing minor bugs.

made class public static

Naive XML parser implemented in Modeler, subject to editing in the near

added a todo

Testing changes Veena

Merge branch 'master' of https://github.com/BrownGLAMOR/TACAdXAgent.git

testing commit II Veena

testing commit by Betsy

Testing commit

minor edits

Created basic framework, and an example user model. For use if need to

Merge branch 'master' of github.com:BrownGLAMOR/TACAdXAgent

initial commit

Initial commit