Fix typos and whitespace
use BasicObject so global includes don't extend CSSHandlers
add ruby 2.1.1
Update all tests to "expect" format and add support for RSpec 3 usage
Swap from :skip to :capybara_skip since :skip is now used by RSpec 3
Add rspec 3 testing to beta gemfile
Add ability to save and open screenshot

This adds a new method `save_and_open_screenshot` that saves the screenshot then
opens it for inspection.

Refactor duplicate logic for `save_and_open_page` and `save_and_open_screenshot`