user@HOST ~/julia/proj
$ cat keynames.txt
julia
justin

user@HOST ~/julia/proj
$ cat blah.rb
keynames = IO.readlines("keynames.txt")
keynames.map! { |line| line.chomp! }
p keynames

user@HOST ~/julia/proj
$ ruby blah.rb
["julia\r", "justin\r"]

how do i get rid of this?