Added external link to Axios library (nodejs#296)

Userbit · MylesBorins · commit eaa16643c800 · 2019-08-16T13:11:03.000-07:00
diff --git a/src/documentation/0039-node-http-post/index.md b/src/documentation/0039-node-http-post/index.md
@@ -7,7 +7,7 @@ section: Getting Started
 
 There are many ways to perform an HTTP POST request in Node.js, depending on the abstraction level you want to use.
 
-The simplest way to perform an HTTP request using Node.js is to use the Axios library:
+The simplest way to perform an HTTP request using Node.js is to use the [Axios library](https://github.com/axios/axios):
 
 ```js
 const axios = require('axios')
