SystemD/NGINX documentation

[mz2212]

I just got everything set up in a stack similar to this, some documentation would be really helpful for those that would like to set this up in a similar environment.

I can get a pull request modifying the readme to include these, as well as a uwsgi daemon ini thingy, if you'd like.

[alexg-k]

Would you mind sharing your virtual host configuration and other modification you made for nginx?