# File lib/rails-installer/commands.rb, line 85
      def self.command(installer, *args)
        version = nil
        args.each do |arg|
          if(arg =~ /^([^=]+)=(.*)$/)
            installer.config[$1.to_s] = $2.to_s
          else
            version = arg
          end
        end
        
        installer.install(version)
      end