added post install message to notify users of move to Watir
added post install message to notify users of move to Watir

Donavan/page-object,vveliev/page-object,cheezy/page-object,vveliev/page-object,irfanah/page-object,Donavan/page-object,irfanah/page-object,cheezy/page-object,jkotests/page-object,jkotests/page-object