code: def selenium_driver(browser,browser_options)
        target,options = browser_caps(browser,browser_options)
        create_selenium_driver(target,options)
      end
docs: Creates a Selenium driver session and returns the driver object
  
   @example
   SauceLabs.selenium_driver(browser = :chrome, browser_options = {})
   @param  [String] the browser string passed into the method
   @param [Hash] the optional hash to specify browser options
   @return [Object] browser session