Add README.md
Put the Twitter API into a class

This will make it replaceable later.

Use "git show -w" to see the changes meaningfully.
Pass the Twitter API into the Week instance

Dependency injection 101!
Add complete.py
Remove the structuring comments

Now, the structure is clearly visible :-)
Make two utility functions of Tweet classmethods
Add an option to resolve shortened URLs
Update self.screen_name if it is overridden

If no screen_name is passed to get_tweets(), self.screen_name is already
correct. In the other case, the instance variable must be updated to
reflect the new screen name.

This also means that screen_name should be read only after get_tweets().
Add an optional screen_name argument to complete.py

This allows to make a backup of someone who follows you.
Use the entities info from Twitter to munge the URLs
Munge images too