title: Moment JS update timezone abbreviation
body: <p>Currently the timezone for the east coast is appearing as "EST", which is technically correct, but we need to update it to display as "ET".  Any advice in how to do this with moment js?  </p>
  
  <p>I tried replacing strings like this in moment-timezone.js, but it didn't appear to change it:</p>
  
  <pre><code>"America/Detroit|EST EDT|50 40|01010101010101010101010|1BQT0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Rd0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0 Op0 1zb0",
  </code></pre>
  
  <p>Any help is greatly appreciated in advance.</p>