Add a socks5 proxy with Telegram-bot and auth

Add a socks5 proxy with Telegram-bot and built-in authentication. It's dockerised, it's node.js, it's awesome.

README.md

@@ -1132,6 +1132,7 @@ See also _[Monitoring](#monitoring)_
 - [Pound](http://www.apsis.ch/pound/) - Light-weight reverse proxy and load balancer for HTTP/HTTPS. `GPL-2.0` `C`
 - [Privoxy](http://www.privoxy.org) - Non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. `GPL-2.0` `C`
 - [Redbird](https://github.com/OptimalBits/redbird) - A modern reverse proxy for node that includes cluster, HTTP2, LetsEncrypt, and Docker support. `BSD-2-Clause` `Javascript`
+- [socks5-proxy-server](https://github.com/nskondratev/socks5-proxy-server) - SOCKS5 proxy server with built-in authentication and Telegram-bot for user management and user statistics on data spent (handy when you pay per GB of data). It is dockerised and simple to install. `Apache-2.0` `NodeJS`
 - [Squid](http://www.squid-cache.org/) - Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. ([Source Code](https://code.launchpad.net/squid)) `GPL-2.0` `C`
 - [Swiperproxy](https://swiperproxy.github.io/) - Lightning-fast, open source web proxy that is easy for you to run and customize. ([Source Code](https://github.com/swiperproxy/swiperproxy)) `MIT` `Python`
 - [Tinyproxy](https://banu.com/tinyproxy/) - Light-weight HTTP/HTTPS proxy daemon. ([Source Code](https://github.com/tinyproxy/tinyproxy)) `GPL-2.0` `C`