You are asking about a two year old comment… things have changed since then 
If you have an issue with a current Blynk/RPi install that isn’t covered in the following links, then please create a new “Help with my Project” topic.
Server on RPi:
https://github.com/blynkkk/blynk-server#blynk-server
Client on RPi:
http://help.blynk.cc/hardware-and-libraries/nodejs-vs-c-library