Improve README

Author: beevelop

README.md

@@ -10,27 +10,29 @@
 > Simple Docker image to provide basic authentication for a single other container.
 
 ## Quickstart
-```
+```bash
 docker run -d --name web dockercloud/hello-world
 docker run -d -p 80:80 --link web:web --name auth beevelop/nginx-basic-auth
 ```
 
 Try accessing and logging in with username `foo` and password `bar`.
 
 ## Advanced
-```
-docker run -d -e HTPASSWD='' -e FORWARD_PORT=1337 --link web:web -p 8080:80 --name auth beevelop/nginx-basic-auth
+```bash
+docker run -d -e HTPASSWD='foo:$apr1$odHl5EJN$KbxMfo86Qdve2FH4owePn.' -e FORWARD_PORT=1337 --link web:web -p 8080:80 --name auth beevelop/nginx-basic-auth
 ```
 > Use single quotes to prevent unwanted interpretation of `$` signs!
 
 ## Configuration
-- `HTPASSWD` (default: `foo:$apr1$odHl5EJN$KbxMfo86Qdve2FH4owePn.`): Will be written on launch to the .htpasswd file (non-persistent)
-- `FORWARD_PORT` (default: `80`): Port of the source container that should be forwarded
+- `HTPASSWD` (default: `foo:$apr1$odHl5EJN$KbxMfo86Qdve2FH4owePn.`): Will be written to the .htpasswd file on launch (non-persistent)
+- `FORWARD_PORT` (default: `80`): Port of the **source** container that should be forwarded
+> The container does not need any volumes to be mounted! Nonetheless you will find all interesting files at `/etc/nginx/*`.
 
 ## Troubleshooting
 ```
 nginx: [emerg] host not found in upstream "web" in /etc/nginx/conf.d/auth.conf:80
 ```
 - You need to link the container as `web` (`--link foobar:web`)
+
 ---
 - SSL is unsupported ATM, but might be available in the near future. For now it might be a suitable solution to use another reverse proxy (e.g. `jwilder/nginx-proxy`) that acts as a central gateway. You just need to configure the `VIRTUAL_HOST` env and disable port forwarding.