Added Nils' instructions about generic vn subnet

By Nils Brynedal copied to Markdown by Christoffer.
Added some formatting.
minor changes
Initial changes to only sending 8 or 0 byte CAN messages
Bugfix
Added check of message length
Removed debug output
Removed debug output
Removed debug output
Removed debug output
changed debug output
Removed debug output
Removed faked routing info
Added protected objects communication
Added protected objects communication
Removed heartbeat
Shortened delay time
Shortened delay time
debug output
debug output