Welcome to the Guestbook!
1. Run GET /key to create a new key that you can use to make records
2. Run POST /record_greeting {key:X, name:Y} to record a greeting using key X for name Y
3. Run GET /greetings/:key to get all greetings made with the specified key

Any given IP address can create up to 100 greetings and 60 keys per minute
Keys and greetings older than 2 days are deleted automatically
Greeted names must be 20 characters or less