Reorganizing installation instructions

[ThomasLandauer]

...as announced in #30 (comment)

Open question:

• What's the actual benefit of Selenium?

See #31 (comment) for next steps - but I'm waiting for Codeception/codeception.github.com#366 and Codeception/codeception.github.com#367 first...

[SamMousa]

Afaik Selenium allows you to instrument different browsers with a unified api. Originally this was extremely relevant, but nowadays it seems less relevant to me as browsers are standardizing these interfaces themselves.

[ThomasLandauer]

Afaik Selenium allows you to instrument different browsers with a unified api

Well, I would say this is what Codeception is doing :-)

I've been using ChromeDriver without any problems for several years, now trying (for curiosity) with GeckoDriver. However, @DavertMik doesn't really agree, see #28 (comment). So I want to find out if there are some actual benefits of Selenium we could mention in the docs - or just leave it as is, as a vague additional option.

[Naktibalda]

Well, I would say this is what Codeception is doing :-)

Codeception doesn't do that at all, it uses php-webdriver library for communication with Selenium or other WebDriver protocol implementation.

Selenium project is where the browser testing started. Originaly they implemented browser drivers themselves, but Selenium project pushed driver development to browser developers and WebDriver protocol became W3C protocol and one by one browsers implemented standalone drivers that can work without Selenium.

I don't do any browser testing, but I think that Selenium is still the best option if you want to run your tests in different browsers by changing single line in configuration.

[ThomasLandauer]

I would say this is ready to be merged :-)