Made database schema & empty directories.
The database schema has a table named "entries." Each row in the table
gets three things: an "id," a "title," and some "text." Auto increment
creates an integer automatically that we'll use for the id. Setting something
as a primary key is very useful when working with sql / databases.

In addition to making this file, I also made two blank directories from the
command line. These directories will show up in my git repo when I add files
to them. #mod note: Maybe it's best to have students wait to make these
directories until right before they need them? I had to make the directory
and then go back to the main one. (BTW, I'm calling the main one flask1
instead of flaskr, which is what the tutorial suggests.)