Add business controller and show page.
Add route to business show page. Add check in link to business show page.
Restructure api file based on new business controller.
Post to check in database model. User is verified through username and password.
Fix logic to check if check_in already exists.
Create message for successful check-in.
Change get checkins to post checkins. Do not need business controller anymore.
Delete business controller and show view files.
Remove route to business show page.
Add username and password info.