Changes to models

Created AppData which has an AppID and a PatientCounter
Patient now has a patientID and address. QuestionID is now being pulled
from the JSON and added to CDQuestion so we can use it as a key.
Merge branch 'master' of https://github.com/mdbellott/TRx

Conflicts:
TRx.xcodeproj/project.pbxproj
gitignore
?