Emoji's in address crash the verification function

[BrandonCopley]

When running

usps.verify({
  street1: 'Rocky Point 🏡',
  street2: '',
  city: 'Austin',
  state: 'Tx',
  zip: '78749'
}

usps.verify will crash. It appears it's important for this toolkit to throw away emoji's rather than crash because sometimes users add emoji's to addresses.