[Ruby] Solution for ERROR: cannot discover where libxml2 is located on your system. please make sure `pkg-config` is installed.

Fixing nokogiri's libxml2/pkg-config install error on macOS by installing the libraries with Homebrew and using system-libraries.

[Ruby] Summary of Helpful Articles for Web Scraping with Nokogiri

A curated list of reference articles for web scraping with the Nokogiri Ruby gem.