Merge pull request #1197 from twalpole/quit

Ensure browser gets cleared when Capybara::Selenium::Driver#quit is called
Merge pull request #1079 from twalpole/double_click

Add double_click and right_click to element - support in selenium
Move to rspec 2.99.beta1
update all tests to "expect" format and remove deprecation warnings from Rspec 2.99.0.beta1
update tests in docs to "expect" format

update new test to expect format

update new tests
alias be_truthy/falsey if not already defined