Watir: how to read from a file

[newsqa]

# Read from a comma delimited file, parses data from comma
# username, password
# Saved as a .rb file (script.rb). "puts" is simply writing to the screen
# www.newsqa.com for more examples to come

require 'watir'

puts "Username, password read in from users.txt file. Pass to variable"

File.open('users.txt', 'r') do |f1|
while line = f1.gets
result = {}
key, value=line.split(",")

puts "Assign user variable here:"
$user = key.strip
puts $user
puts "Assign password here"
$password = value.strip
puts $password
end
end