Renamed the auth response call to ResponseAuth

ref #76

src/models/responses/ResponseAuth.ts

@@ -3,7 +3,7 @@ import { IsInt, IsString } from 'class-validator';
 /**
  * Defines the repsonse auth.
 */
-export class Auth {
+export class ResponseAuth {
   /**
   * The access_token - JWT shortterm access token.
   */