Command line progress spinner

spinner.rb

# Command line progress spinner
# As seen here: http://www.youtube.com/watch?v=W-4vEZp67b0

require 'thread'
require 'open-uri'

Thread.abort_on_exception = true

class Spinner
  GLYPHS = ['|', '/', '-', '\\', '|', '/', '-', '\\']

  def render
    Thread.new do
      while true
        GLYPHS.each do |glyph|
          print "\r#{glyph}"
          sleep 0.15
        end
      end
      print "\r"
    end
  end
end

spinner = Spinner.new
spinner.render

response = open('http://wikipedia.org').read
puts response