add nuke gizmo tool into Nuke tool bat!

edit menu.py file under C:\Documents and Settings\Username\.nuke (for example!), and add a gizmo call "DepthGrade"

toolbar = nuke.toolbar("Nodes")
# The "3DTools" menu
m = toolbar.addMenu("3DTools", "ReConverge.png")
m.addCommand("DepthGrade", "nuke.createNode(\"DepthGrade\")")