nightwatchjs
Add more info on desired edge version.
It is not very often clear to the user which version of Edge webdriver they need to download. So, made a little change so that they know that the webdriver version should match the version of the Edge browser they have on their system.
The page for setting up Edge Driver has changed a lot and only talks about using EdgeDriver on local selenium-server (and no longer discusses how to get the edge driver running normally with Nightwatch).
As the edge driver does not work normally with Nightwatch like the other drivers (no package related to edgedriver can be installed), we need to add a section for that as well as we did previously (how to download msedgedriver and pass it's location to webdriver/server_path.