How to close browser with capybara?

@shyann 

To close the browser with Capybara, you can use the following steps:

1. Get the current session and driver used by Capybara:

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session = Capybara.current_session
driver = session.driver

1. Use the quit method of the driver to close the browser:

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driver.quit

This will close the browser that was opened by Capybara during your test.