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/Group.py

@@ -0,0 +1,97 @@
+# Blender.Group module and the Group PyType object
+
+"""
+The Blender.Group submodule.
+
+Group
+=====
+
+This module provides access to B{Group} data in Blender.
+
+Example::
+
+  # Make Dupli's Real, as a python script.
+
+  from Blender import *
+
+  scn= Scene.GetCurrent()
+  for ob in Object.GetSelected():
+    print 'Object Group Settings'
+    print ob.name, ob.getType()
+    print 'enableDupVerts:', ob.enableDupVerts
+    print 'enableDupFrames:', ob.enableDupFrames
+    print 'enableDupGroup:', ob.enableDupGroup
+    print 'DupGroup:', ob.DupGroup
+    dupe_obs= ob.DupObjects
+    print 'num dup obs:', len(dupe_obs)
+
+    for dup_ob, dup_matrix in dupe_obs:
+      print '\tDupOb', dup_ob.name
+      new_ob= Object.New(dup_ob.getType())
+      new_ob.shareFrom(dup_ob)
+      scn.link(new_ob)
+      new_ob.setMatrix(dup_matrix)
+      new_ob.sel= 1 # select all real instances.
+
+    ob.sel=0 # Desel the original object
+
+  Window.RedrawAll()
+
+Example::
+
+  # Make a new group with the selected objects, and add an instance of this group.
+
+  from Blender import *
+  
+  scn= Scene.GetCurrent()
+  
+  # New Group
+  gp= Group.New('mygroup')
+  gp.objects= Object.GetSelected()
+  
+  # Instance the group at an empty using dupligroups
+  ob= Object.New('Empty')
+  scn.link(ob)
+  ob.enableDupGroup= True
+  ob.DupGroup= gp
+  Window.RedrawAll()
+"""
+
+def New (name = None):
+  """
+  Make a new empty group, name optional, default is "Group"
+  @type name: string
+  @param name: The name of the new group.
+  @rtype:  Blender Group
+  @return: A Empty Blender Group object
+  """
+
+def Get (name = None):
+  """
+  Get the Group object(s) from Blender.
+  @type name: string
+  @param name: The name of the Group object.
+  @rtype: Blender Group or a list of Blender Groups
+  @return: It depends on the I{name} parameter:
+      - (name): The Group object called I{name}, Exception if it is not found.
+      - (): A list with all Group objects in the current blend file.
+  """
+
+def Unlink (group):
+  """
+  Unlink (delete) this group from Blender.
+  @type group: group
+  @param group: A group to remove from this blend file, does not remove objects that this group uses.
+  """
+
+
+class Group:
+  """
+  The Group object
+  ================
+    This object gives access to Groups in Blender.
+  @ivar name: The name of this Group object.
+  @ivar users: Number of users this group has (read only)
+  @ivar objects: Objects that this group uses. This is an iterator with list like access so use list(gp.objects) if you need to use a list). where gp is a group object.
+  """
+