Feature multisite

[pjohanneson]

Added Multisite capability to the project, including:

• subfolder or subdomain Multisite activation
• network-activated plugins
• network-enabled default theme

[flurinduerst]

Thanks a lot for your contribution! It is highly appreciated. Just as a note: I didn't find the time to check and merge this request as of now. It will be the next thing i'll do here.

[johnpitchko]

Any updates on when this will be merged into the master branch?

[flurinduerst]

This pull-request got delayed a lot and I'm aware of it, sorry. I highly appreciate the contribution. But I'm not sure if this feature would be used a lot. For us, it's very important to keep WPDistillery as clean and minimal as possible. For this reason I created a survey to receive informations about the need of this feature. Please see #59

I might add this to the next major release, maybe we need to swap multisite relevant files to its own folder for clarity.

[flurinduerst]

As stated in #59 I will not merge this PR as we decided to keep WPDistillery as clean as it is. I will add a note to the readme though and link to the PR. Thanks a lot to @pjohanneson for the contribution. Highly appreciate it! 🎉

[XedinUnknown]

So, you added a note to the readme, and a link to this PR. But nothing related to how we could have a multisite installation with WPD :)