Correct developer information in README

README.md

@@ -44,7 +44,7 @@ To deploy the site locally:
 
 ### 0. Pre-requisites
 
-You need Ruby and a couple of ruby packages (`gems`):
+You need Ruby (and `ruby-dev`) and a couple of ruby packages (`gems`):
 
 ```
 ~$ sudo gem install middleman bundler
@@ -87,6 +87,13 @@ This generates the static files in `$DIR/webroot`.
 
 ### 4. Browse it
 
+You can fallback to the backend for non-built files if you run the local
+middleman server:
+
+```
+beta.devuan.org$ bundle exec middleman server -p 4569
+```
+
 Open your browser to `http://beta.devuan.org` (or `beta.devuan`, YMMV)
 
 ## Production Deployment
@@ -100,8 +107,6 @@ Do commit the change, so that it will be kept during updates, but DO NOT PUSH
 it! If you need to push, you should use another working directory than the 
 deployed one.
 
-Setup automated updates from the repository, e.g., using `etc/crontab`.
-
 Once your mirror is deployed, please send its URL, language, location, and 
 person responsible to [the relevant topic on Devuan Discourse][mirror], so it 
 can be added to the list.  E.g., a mirror in France can be accessed via