Pipe less with colors

# Normal pipe will not output ANSI colors
ruby twitpow.rb history | less

# There is an entry in "less --help" that says
  -r  -R  ....  --raw-control-chars  --RAW-CONTROL-CHARS
                  Output "raw" control characters.

# Pipe less with ANSI colors!
ruby twitpow.rb history | less -r