message: Expect correct content type in Premium Challenge
diff: @@ -107,10 +107,10 @@ describe('Hidden URL', () => {
  .expect('bodyContains', '<title>Welcome to Planet Orangeuze</title>')
  })
  - it('GET the premium content by visiting the ROT5>Base64>z85>ROT5-decrypted URL', () => {
  + it('GET the premium content by visiting the AES decrypted URL', () => {
  return frisby.get(URL + '/this/page/is/hidden/behind/an/incredibly/high/paywall/that/could/only/be/unlocked/by/sending/1btc/to/us')
  .expect('status', 200)
  - .expect('header', 'content-type', 'image/gif')
  + .expect('header', 'content-type', 'image/jpeg')
  })
  it('GET Klingon translation file for "Extra Language" challenge', () => {
  