Throttling limit causes API-expired error message

[robotpony]

If the throttling limit is hit, lemonsync throws a bad-API key error:

The API Access Token isn't valid for https://warpedlino.lemonstand.com/api/v2/identity/s3. Please check that your Access Token is correct and not expired.

Received headers:

REQUEST onRequestResponse https://warpedlino.lemonstand.com/api/v2/identity/s3 401 { date: 'Thu, 21 Dec 2017 23:35:06 GMT',
  server: 'Apache',
  pragma: 'no-cache',
  'last-modified': 'Thu, 21 Dec 2017 23:35:06 GMT',
  'cache-control': 'private, max-age=60',
  'x-throttle-limit': '95/50 (over)',
  'content-length': '80',
  connection: 'close',
  'content-type': 'application/json',
  'set-cookie': [ 'SERVERID=app10; path=/' ] }

Note the 'x-throttle-limit': '95/50 (over)', value!