README examples don't compile

[dmjones]

The examples show how to read everything from a database:

// Read all fish from the database, unmarshaling the response.
records, err := db.ReadAll("fish")
if err != nil {
  fmt.Println("Error", err)
}

fish := []Fish{}
if err := json.Unmarshal([]byte(records), &fish); err != nil {
  fmt.Println("Error", err)
}

However, db.ReadAll returns a []string, which cannot be cast to []byte in the call to json.Unmarshal.