Update home - beautifying

home.md

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 Click [Here](Teacherdoc) for the [Teacher Documentation](Teacherdoc)
 
-Program Overview
+**EduNetworkBuilder Overview**
+
 The Educational Network Builder is a simplistic tool for teaching ip-addresses, subnet masks, gateways, and routing. It was inspired when I saw someone using packet-tracer for trying to teach simple concepts. So much time was spent learning Cisco stuff and so little time on what was actually needed for simple routing.
 
 So I created EduNetworkBuilder.