Added an instruction for installing WiFi drivers

[Manuel-Kehl]

This is to be executed if WiFi does not work by default.

I assumed it is of higher priority than the "theme instruction", as the latter is of purely cosmetic nature. Feel free to rearrange the entries, if you feel different about it.

[aroman]

Thanks for this! @sdaitzman any reason we shouldn't merge this?

[sdaitzman]

It isn't necessary assuming Cody and I did our jobs right :wink:

[Manuel-Kehl]

@aroman, @sdaitzman I made one last proposal: Moving the instruction to the end and marking it optional, as I am quite sure, that there are more people who have not found the most recent build "at first glance".

If you'd rather keep the tutorial as short as possible by avoiding information that is unnecessary for 90% of the users, I'd perfectly understand your decision. Just ignore/close the pull request in that case ;-)

[sdaitzman]

I think it's worth merging since most people will be using Beta 1 until we release Beta 2 or some newer build

[sdaitzman]

Maybe it should have a note about Beta 1 specifically (e.g. "if you have an older build, like Beta 1")

[Manuel-Kehl]

Ok @sdaitzman, I clarified that it may especially happen on older builds, like Beta 1 ;-)

[aroman]

awesome. thanks for the help @mank319!