Updated doxgen docs.

include/osgIntrospection/Export

@@ -41,4 +41,21 @@
 # endif
 #endif
 
+/**
+
+\namespace osgIntrospection
+
+The osgIntrospection library provides the an introspection/reflection framework for non intrusive
+run-time querying and calling of class properties and methods.
+
+osgIntrospection is ideal for providing non native language binding to the OpenSceneGraph, convenient means
+for editing properties in a generic way, such as required in scene graph editors,
+and also facilitates the automatic serealization of objects.
+
+osgIntrospection can be used to provide introspection support to 3rd Party libraries without the need to
+modify them to add this support, the wrappers providing the actual binding can be
+automatically generated by parsing header files via gen_wrapper utility.  All the
+core OpenSceneGraph libraries have pre built wrappers available for you use.
+*/
+
 #endif