Should use `open_timeout` or `read_timeout` instead of `timeout`

[KazuCocoa]

Should use open_timeout or read_timeout instead of timeout

• ruby_lib/lib/appium_lib/driver.rb

  Line 551 in 2a91a6d

  @client.timeout = 999_999

Because of

Kernel.warn 'Selenium::WebDriver::Remote::Http::Default#timeout= is deprecated. Use #read_timeout= or #open_timeout= instead'

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• Additionally, we should use selenium-webdriver3.0.4+.