watch.file

def jekyll(match)
  puts "running jekyll because of change on #{match[0]}"
  system("jekyll")
end

watch( 'index.*' )  {|m| jekyll m }
watch( '_layouts/*' )  {|m| jekyll m }
watch( '_posts/*'   )  {|m| jekyll m }
watch( 'css/*'      )  {|m| jekyll m }
watch( 'images/*'   )  {|m| jekyll m }