REST: Changed "endpoint" to optional (#3404)

* REST: Changed endpoint to optional

REST API methods can be called with absolute URL ("https://") and therefore the property "endpoint" doesn't need to be specified in general

* Fixed REST helper docs

Author: mirao

docs/helpers/REST.md

@@ -22,7 +22,7 @@ Type: [object][4]
 
 ### Properties
 
--   `endpoint` **[string][3]** API base URL
+-   `endpoint` **[string][3]?** API base URL
 -   `prettyPrintJson` **[boolean][6]?** pretty print json for response/request on console logs
 -   `timeout` **[number][5]?** timeout for requests in milliseconds. 10000ms by default
 -   `defaultHeaders` **[object][4]?** a list of default headers

lib/helper/REST.js

@@ -9,7 +9,7 @@ const { beautify } = require('../utils');
  *
  * @typedef RESTConfig
  * @type {object}
- * @prop {string} endpoint - API base URL
+ * @prop {string} [endpoint] - API base URL
  * @prop {boolean} [prettyPrintJson=false] - pretty print json for response/request on console logs
  * @prop {number} [timeout=1000] - timeout for requests in milliseconds. 10000ms by default
  * @prop {object} [defaultHeaders] - a list of default headers