Add Mainpage.dox for Plasma

svn path=/trunk/KDE/kdebase/workspace/plasma/lib/; revision=666667

Mainpage.dox

@@ -0,0 +1,11 @@
+/**
+* @mainpage Plasma libraries
+*
+* This directory contains the classes making up libplasma, which provides the
+* core framework used by Plasma and its components. This includes applet and
+* extension definitions and loading, common GUI elements, etc.
+* 
+* Domain specific sets of functionality, e.g. for network awareness or sensors,
+* are not found here but in one of the Plasma Engines.
+*
+*/