gistfile1.js

In requirements.json:
{
  "ticket_fields": {
    "duplicate_macro": {
      "type": "checkbox",
      "title": "Duplicate Macro Sent"
    }
  }
}

----

Removed the duplicate field parameter from Manifest.json, and edited the readme appropriately. 

--- 

In app.js, to get the field set up by requirements.json: 
duplicateField = this.requirement('duplicate_field');

In app.js to set the field: 
ticket.customField(duplicateField,"yes"); 

or

ticket.customField(duplicateField,"no");