Added doc aboud dbus usage. Not filled yet thought.

docs/Jamfile

@@ -10,4 +10,4 @@
 
 SubDir TOP docs ;
 
-EdeManual index.txt introduction.txt jambuild.txt ;
+EdeManual index.txt introduction.txt jambuild.txt dbus-usage.txt ;

docs/dbus-usage.txt

@@ -0,0 +1,21 @@
+D-BUS usage in EDE
+==================
+
+This document describes link:http://freedesktop.org/software/dbus/[D-BUS] usage in EDE applications.
+It is not meant to describe D-BUS protocol nor how to use it either via libdbus nor edelib, but
+to document and explain what programs listen or send data via D-BUS protocol.
+
+Naming convention
+-----------------
+EDE uses 'org.equinoxproject' as main namespace for interfaces and object paths, e.g.
+
+-----------------------------------------------------------
+  org.equinoxproject.Eiconman   # eiconman interface
+  /org/equinoxproject/Eiconman  # eiconman object path
+-----------------------------------------------------------
+
+Applications
+------------
+
+eiconman
+~~~~~~~~

docs/index.txt

@@ -31,3 +31,4 @@
 
 - link:HACKING.html[Contributing (in your spare time ;-)]
 - link:jambuild.html[Jam build]
+- link:dbus-usage.html[D-BUS usage]