simple blender addon to reload all images

reload_all_image.py

bl_info = {
    "name": "Reload All Images",
    "author": "tmpxyz",
    "version": (1, 0),
    "blender": (2, 72, 2),
    #"location": "View3D > Toolbar and View3D > Specials (W-key)",
    "warning": "",
    "description": "reload all images",
    "category": "image",
}

import bpy

class ReloadAllImages(bpy.types.Operator):
    """Reload All images"""      # blender will use this as a tooltip for menu items and buttons.
    bl_idname = "image.reload_all_images"        # unique identifier for buttons and menu items to reference.
    bl_label = "Reload All Images"         # display name in the interface.
    bl_options = {'REGISTER', 'UNDO'}  # enable undo for the operator.

    def execute(self, context):        # execute() is called by blender when running the operator.

        # The original script
        for i in bpy.data.images:
            i.reload()

        return {'FINISHED'}            # this lets blender know the operator finished successfully.

def register():
    bpy.utils.register_class(ReloadAllImages)
    bpy.types.IMAGE_MT_image.append(menu_func)

def menu_func(self, context):
    self.layout.operator(ReloadAllImages.bl_idname)

def unregister():
    bpy.utils.unregister_class(ReloadAllImages)
    bpy.types.IMAGE_MT_image.remove(menu_func)


# This allows you to run the script directly from blenders text editor
# to test the addon without having to install it.
if __name__ == "__main__":
    register()