Adds a podspec.

Just the one from the Cocoapods specs repo.
Token shows name instead of email address.
Displays name instead of email when using AB.
Can associate a COPerson with a specific email address.

Rather than just returning the person as a whole.
Fixes wrong email returned when using the results picker.

I didn't realise there was one COPerson objects were per person, not per result, so each cell would override the previous one's identifier value.
Adds fork specific info to read me.
Merge branch 'return-single-email'