Added documentation, removed some options

docs/en/nginx_install.rst

@@ -1,3 +1,64 @@
-========================
-Installing with Nginx
-========================
+============
+Nginx setup
+============
+
+Nginx is a very popular choice to serve a Python project:
+
+- It's fast.
+- It's lightweight.
+- Configuration files are simple.
+
+If you have your own server, it's the best choice. If not, try the easiest
+setup, or the Apache setup.
+
+Nginx doesn't run any Python process, it only serve requests from outside to
+the Python server.
+
+Therefor there are two steps:
+
+- Run the Python process.
+- Run Nginx.
+
+You will benefit from having:
+
+- the possiblity to have several projects listening to the port 80;
+- several Apache module at your disposal (like requests throttling);
+- Apache robustness in front end: it's secure, and there is much less chance
+  it will crash under heavy load;
+- your web site processes won't run with admin rights, even if --user doesn't
+  work on your OS;
+- the ability to manage a Python process without touching Nginx or the other
+  processes. It's very handy for updates.
+
+The Python process
+==================
+
+Run 0bin as usual, but this time make it listen to a local port and host. E.G::
+
+    zerobin --host 127.0.0.1 --port 8000
+
+In PHP, when you edit a file, the changes are immediatly visible. In Python,
+the whole code is often loaded in memory for performance reasons. This means
+you have to restart the Python process to see the changes effect. Having a
+separate process let you do this without having to restart the server.
+
+Nginx
+======
+
+Nginx can be installed with you usual package manager, so we won't cover
+installing it.
+
+Vous must create a Nginx configuration file for 0bin. On GNU/Linux, they usually
+go into /etc/nginx/conf.d/. Name it zerobin.conf.
+
+The minimal file to run the site is:
+
+But you can make some adjustement to get better perfomances:
+
+
+
+
+
+
+
+