watir setup

gistfile1.txt

# tags: scripting testing www script browser ruby automation webdev safari
# tags: watir

# update gem
sudo gem update --system

# check gem version
gem -v

# install safariwatir
sudo gem install safariwatir --no-ri --no-rdoc

# test it
$ irb
>> require "safariwatir"
=> true
>> browser = Watir::Safari.new
=> #<Watir::Safari:0x10e833858 @scripter=#<Watir::AppleScripter:0x10e8337e0 @app=app("/Applications/Safari.app"), @document=app("/Applications/Safari.app").documents[1], @appname="Safari", @js=#<Watir::JavaScripter:0x10e833808>, @typing_lag=0.08>>
>> browser.goto "http://watir.com"
=> nil
>> quit
$

Then see examples on watir.com