Fix broken external links to nodejs.org and http://ruby-lang.org.
Fix broken external links to nodejs.org and http://ruby-lang.org.
jmwenda/nationmaps,datapolitan/cartodb20,datapolitan/cartodb20,datapolitan/cartodb20,jmwenda/nationmaps,datapolitan/cartodb20,jmwenda/nationmaps,jmwenda/nationmaps