TODO
allow to customize cell bubble color
expose just getting contacts from addressbook
add options
EVContactPickerDataSourceOptions.Addressbook
or
EVContactPickerDataSourceOptions.CoreData
if coredata submit Entity, Context... Entity MUST conform to EVContactsPickerDataSourceProtocol
allow to submit a predicate for both address book and core data format
detail page for coredata wont work... need to make custom