Feature: show update notif in panel

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
#
# On branch hossein/admin-notice
# Changes to be committed:
#	modified:   DPGateway.php
#	new file:   includes/update.php
#	modified:   index.php
#	modified:   wc-dp-gateway.php
#
