Cleanups + info to readme

notify_generic.sh

@@ -1,14 +0,0 @@
-### DISCLAIMER: This is a third party addition to dockcheck - best effort testing.
-#
-# Copy/rename this file to notify.sh to enable the notification snippet.
-# generic sample, the "Hello World" of notification addons
-
-send_notification() {
-  Updates=("$@")
-  UpdToString=$( printf "%s\n" "${Updates[@]}" )
-  FromHost=$(hostname)
-
-  # platform specific notification code would go here
-  printf "\n%bGeneric notification addon:%b" "$c_green" "$c_reset"
-  printf "\nThe following docker containers on %s need to be updated:\n%s\n" "$FromHost" "$UpdToString"
-}