Add FTP client for C++ (fffaraz#1559)

Author: toge

README.md

@@ -877,6 +877,7 @@ A curated list of awesome C++ (or C) frameworks, libraries, resources, and shiny
 * [Dyad.c](https://github.com/rxi/dyad) - Asynchronous networking for C. [MIT]
 * [ENet](https://github.com/lsalzman/enet) - Reliable UDP networking library. [MIT] [website](http://enet.bespin.org/)
 * [evpp](https://github.com/Qihoo360/evpp) - C++ high performance networking with TCP/UDP/HTTP protocols. [BSD]
+* [FTP client for C++](https://github.com/embeddedmz/ftpclient-cpp) - C++ client for making FTP requests. [MIT]
 * [H2O](https://github.com/h2o/h2o) - An optimized HTTP server with support for HTTP/1.x and HTTP/2. It can also be used as a library. [MIT]
 * [HTTP Parser](https://github.com/nodejs/http-parser) :zap: - A http request/response parser for C. [MIT]
 * [KCP](https://github.com/skywind3000/kcp/blob/master/README.en.md) - A fast and reliable ARQ protocol that helps applications to reduce network latency. [MIT]