'''

This program is a phonebook that works trhe following way:

Display to the user a menu with three options:

1) Add a new entry
2) View entries
3) Logoff

When the user adds a new entry we will ask him for:
* name
* phone
* occupation

We will then confirm that:
* the number is 10 digits or more
* confirm there is a comma

We will then replace the "-" with a ".".

Then we add a multiline string (with format) to our phonebook list.

'''