To test under Ruby 1.9:

  OLD_PATH=$PATH
  export PATH=~/.multiruby/install/1.9.2-preview1/bin:$PATH
  rake spec
  export PATH=$OLD_PATH

Depends on ZenTest:

  sudo gem install ZenTest
  multiruby -e 'true' # trying to execute anything will trigger initial setup

Add notes on testing under Ruby 1.9
Add notes on testing under Ruby 1.9

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>
