The email should be an email. :).
Add a description to the store type.
Encapsulate the save method in a try catch block.
Merge pull request #7 from jsacksick/store_quickfixes

Merging in the addition of a store type description and try / catch blocks around store / store type saving.
Merge pull request #6 from jsacksick/order_email

Define the order e-mail base field as an actual e-mail field.