ruby_requirement: Check for ruby.h for Linuxbrew (#269)
ruby_requirement: Check for ruby.h for Linuxbrew (#269)


rwhogg/brew,maxim-belkin/brew,Linuxbrew/brew,rwhogg/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew,hanxue/linuxbrew,maxim-belkin/brew,Linuxbrew/brew,hanxue/linuxbrew,rwhogg/brew,Linuxbrew/brew