README.md: clean up

README.md

@@ -19,11 +19,32 @@ frontend.
 * Icinga 2 v2.4.0 using the new Graphite tree in ([#9461](https://dev.icinga.org/issues/9461)).
 * Graphite and Graphite Web
 
+## Prepare Icinga2
+
+Enable the graphite feature:
+
+    icinga2 feature enable graphite
+
+Adjust it's configuration in `/etc/icinga2/features-enabled/graphite.conf`:
+
+```
+library "perfdata"
+
+object GraphiteWriter "graphite" {
+  host = "127.0.0.1"
+  port = 2003
+  enable_send_thresholds = true
+}
+```
+
+And then restart Icinga2. Enabling thresholds is not a hard requirement.
+However, some templates look better when they are able to render a max
+values or similar.
 
 ## Installation
 
-Just extract this to your Icinga Web 2 module folder. Enable the graphite
-module in your Icinga Web 2 frontend
+Just extract/clone this module to a `graphite` subfolder in your Icinga
+Web 2 module path. Enable the graphite module in your Icinga Web 2 frontend
 (Configuration -> Modules -> graphite -> enable) and it should work out of
 the box.
 
@@ -42,38 +63,15 @@ webserver is running as). Example for RHEL/CentOS/Fedora:
 
     chown -R apache:icingaweb2 /etc/icingaweb2/modules/graphite
 
-Edit `/etc/icingaweb2/modules/graphite/config.ini` and set `web_url`
+Edit `/etc/icingaweb2/modules/graphite/config.ini` and set `web\_url`
 to the Graphite web host.
 
     [graphite]
     web_url = http://my.graphite.web
 
-Example for Icinga 2 v2.4.x:
-
-    host_pattern = icinga2.$hostname
-
 You don't need any configuration in your Icinga 2 installation (e.g.
 additional custom vars).
 
-### Templates
-
-There are several sample templates shipped with this module.
-
-When using the Icinga 2 v2.4.x+ tree, you may filter based on
-
-* host name
-* service name
-* check command name (similar to other graphing solution such as PNP)
-
-
-
-## TODO
-
-* Web based configuration
-* Additional filters
-* Tree integration for detail views
-
-
 ## Testdrive
 
 Icinga 2 and Graphite feature enabled: