improve localized server instruction

Author: yorkxin

README.md

@@ -33,9 +33,32 @@ Then open <http://localhost:9292> in a web browser, and verify that you can navi
 To serve sites from "sites/en", use `rake run` or a vanilla deploy.
 
 To server sites from another locale (say, "es" or Spanish)...
-  * Locally, use the SITE_LOCALE environment variable: `SITE_LOCALE=es rake run`
-  * On a server, make the server respond to a locale subdomain: `http://es.railsbridge.org`
-  * Or to temporarily test, use a `locale` or `l` parameter: `http://docs.railsbridge.org/?l=es` (note that in this mode, links are not rewritten, so if they fail you will have to manually add the parameter again)
+
+### Run Localized Site Locally
+
+    $ SITE_LOCALE=es rake run
+
+The server listens on `0.0.0.0:9292`.
+
+Now you have to setup subdomain for the site. If you have Pow, run:
+
+    $ echo 9292 > ~/.pow/railsbridge # works for any subdomain
+
+If you don't have Pow, add the following line to `/etc/hosts`:
+
+    127.0.0.1 es.railsbridge.dev # works for single subdomain
+
+Now you can access `http://es.railsbridge.dev:9292` for debugging.
+
+### Running on a Server
+
+Just make sure the server responds to a locale subdomain: `http://es.railsbridge.org`
+
+### Temporary Testing
+
+Use a `locale` or `l` parameter: `http://docs.railsbridge.org/?l=es`.
+
+Note that in this mode, links are not rewritten, so if they fail you will have to manually add the parameter again.
 
 ## Contributing