Added Group to Blender.Types, tested and working.

Added Group Epydocs, with 2 examples.
also added http://en.wikibooks.org/wiki/Blender_3D:_Blending_Into_Python
  to the blender links main page.

source/blender/python/api2_2x/doc/API_intro.py

@@ -20,6 +20,7 @@ The Blender Python API Reference
   - L{Curve}
   - L{Draw}
   - L{Effect}
+  - L{Group} (*)
   - L{Image}
   - L{Ipo}
   - L{Key} (*)
@@ -56,7 +57,7 @@ The Blender Python API Reference
   - L{Special features<API_related>}:
     - scripts: registering in menus, documenting, configuring (new);
     - command line examples (new);
-    - script links (*), space handler script links (new).
+    - script links (*), space handler script links, Group module (new).
 
 Introduction:
 =============
@@ -222,6 +223,7 @@ A note to newbie script writers:
 @see: U{blender architecture<http://www.blender3d.org/cms/Blender_Architecture.336.0.html>}: blender architecture document
 @see: U{www.python.org<http://www.python.org>}
 @see: U{www.python.org/doc<http://www.python.org/doc>}
+@see: U{en.wikibooks.org/wiki/Blender_3D:_Blending_Into_Python>}: User contributed documentation, featuring a blender/python cookbook with many examples.
 @note: this documentation was generated by epydoc, which can output html and
    pdf.  For pdf it requires a working LaTeX environment.