Update README.md

typo
Added GEO coordinates
list, graph and map linked to http://freifunk.in-kiel.de/ffmap/
Merge branch 'master' of git://github.com/ffnord/gluon-alfred-vis
have gluon-alfred-vis work again with new alfred data scheme
move example helper script to lib
add cron.d file lib/gluon-alfred-vis