Merge pull request #9 from jplitza/master

Transfered infos from http://wiki.freifunk.net/IC-VPN
fix ipv6 networks of berlin
fixes
Update values
Merge pull request #10 from sargon/master

Update values
added tech-c and public IPv6
Merge pull request #11 from bodems/master

added tech-c and public IPv6
update rhein-neckar ipv6

add the announced ipv6 space
change prefix to match RFC 4913
Merge pull request #12 from Freifunk-Rhein-Neckar/master

update rhein-neckar ipv6
add README
Add tinc options to readme
Added tinc keys from icvpn repository