Ruby on Rails

Problem installing Rails.  Well what else is new?  Right?

Thankfully, there is no new problem under the sun.  At least not the kind of problems I encounter, definitely not the cutting edge type.

This website saves me.

http://www.ericluwj.com/2015/10/29/installing-ruby-on-rails-on-osx.html

gem install nokogiri -- --with-xml2-include=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.11.sdk/usr/include/libxml2 --use-system-libraries

The El Capitan section is what resolves my issue:- Rails is not installing because some libxml2 issues.  My problem solving skill is pretty much cook book recipe approach.  I don't know why it works but it works.