created addresses_cards join table
can now create group cards and assign one card to multiple addresses
updated PDF generation. changed font, updated code to dynamically generate salutation
Created Order model, set up shopping cart. Fixed naming of controller files. Closes #5
checkout method now generates all the cards in a user's order
Cardlings are now created at checkout
began writing send_jobs_to_lob method. established connection
commiting before testing cron task
commiting before adding PDF storage to s3
Cardlings are now stored in s3 bucket. Cron task set to run daily to send cards to Lob
commiting before merge