`add()` doc. need fix

[andythebreaker]

on npm doc. for add(value, key) have example code where

add({ name: 'name', email: 'email' }).then(
      event => {
        console.log('ID Generated: ', event.target.result);
      },
      error => {
        console.log(error);
      }
    );

need to be changed to

add({ name: 'name', email: 'email' }).then(
      event => {
        console.log('ID Generated: ', event);
      },
      error => {
        console.log(error);
      }
    );

[zehawki]

Yup, Ive also run into this same and came here to report this issue and found it open.