Resaving incomplete classification results in GET, not PUT

resave-incomplete-classification.js

const api = require('panoptes-client/lib/api-client');
const auth = require('panoptes-client/lib/auth');
const credentials = {
  login: process.env.PANOPTES_USER,
  password: process.env.PANOPTES_PASSWORD,
}
auth.signIn(credentials)
  .then(() => {
    return api.type('classifications/incomplete').get();
  })
  .then(classifications => {
    return classifications[0].save(); // GET https://panoptes-staging.zooniverse.org/api/classifications/<id>
  })
  .catch(console.error);