Daniel Sposito

Investigate address lookup via tracking code

2

Investigate whether sender/receiver address can be looked up on carrier's website using solely the tracking number.

Add a `service` property to the `Package` class for storing the shipping service (Ground, Priority, Express, etc). UPS: http://www.reddit.com/r/LifeProTips/comments/1r81rp/lpt_the_first_six_digits_of_a_ups_tracking_number/ USPS: Services: https://tools.usps.com/go/TrackConfirmAction_input

Add check-digit validation for verifying tracking numbers are valid: http://answers.google.com/answers/threadview/id/207899.html