For when I forget to export pngs without extensions

no_pngs.rb

# Step thru directory
# Find files without extension
# Rename file to include .png extension

dir = Dir.getwd

Dir.foreach(dir) do |f|
  ext = File.extname(f)
  if ext == '' && File.file?(f)
    File.rename(f, "#{f}.png")
  end
end

puts "Done."