Cyberhec

I followed all of the above instructions and got this error: MyName-Air:~ MyName$ sudo gem install rb-appscript Password: Fetching: rb-appscript-0.6.1.gem (100%) Building native extensions. This could take a while... ERROR: Error installing rb-appscript: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/include/ruby.h Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/rb-appscript-0.6.1 for inspection. Results logged to /Library/Ruby/Gems/2.0.0/gems/rb-appscript-0.6.1/./gem_make.out MyName-Air:~ MyName$ When I enter Alfred it doesn't find the command "rl" Any help appreciated !!