Added manager.py which will contain main logic. Started constructor for Book
All functionality for groups complete
Merge branch 'master' of https://github.com/chriscro111/contacts
Finished Constructo for Book
Merge branch 'master' of github.com:andrewgard/contacts
modified string formating for printing Book objects
Fixed formatting for printing groups
Merge branch 'master' of https://github.com/chriscro111/contacts