Sessions in Firefox and Chrome about elixir-webdriver

[stuart]

ChromeDriver has the same issue.

[stuart]

Firefox response:

{:invalid_request, 404, "Unrecognized command: GET /sessions", %WebDriver.Protocol.Request{body: :null, headers: [{"Accept", "application/json;charset=UTF-8"}], method: :GET, url: "http://localhost:59027/hub/sessions"}}

[stuart]

Chrome response:

{:invalid_request, 404, "unknown command: sessions", %WebDriver.Protocol.Request{body: :null, headers: [{"Accept", "application/json;charset=UTF-8"}], method: :GET, url: "http://localhost:59041/wd/hub/sessions"}}

[stuart]

Patched tests to make this obvious. Can't fix otherwise.