anchor.diff:  by the application for various functions.  
   If application header key does not match, an alternate response occurs (401).
   GET /apps/{id}
  -> ApplicationKey: g7fgs7-hwek5-ospr9-sdfkj-wperj
   < 200
   < Content-Type: application/json
   {
  
positive.code: --
  
  Create a Member Validation
  POST /transactions/validations
  > Content-Type: application-json
  > ApplicationKey: g7fgs7-hwek5-ospr9-sdfkj-wperj
  {
      "firstName": "Daniel",
      "lastName": "Shapiro",
      "email": "daniel.shapiro@points.com",
      "password": "password"
  }
  < 200
  {
      "validation": "/transactions/validations/12384"
  }
  
  Validate a Member Validation
  GET /transactions/validations/{mvID}
  > ApplicationKey: g7fgs7-hwek5-ospr9-sdfkj-wperj
  < 200
  < Content-Type: application/json
  {
  
negative.code: 
  Details of promotions that are relevant to the Application & Member
  GET /apps/{id}/promotions
  < 200
  < Content-Type: application/json
  { 
  