chore(package): update eslint to version 3.1.0
chore(package): update eslint to version 3.1.0

https://greenkeeper.io/
morray/iD,openstreetmap/iD,edpop/iD,1ec5/iD,bagage/iD,bagage/iD,openstreetmap/iD,ngageoint/hootenanny-ui,mapmeld/iD,ngageoint/hootenanny-ui,openstreetmap/iD,ngageoint/hootenanny-ui,1ec5/iD,kartta-labs/iD,1ec5/iD,edpop/iD,AndreasHae/iD,morray/iD,AndreasHae/iD,digidem/iD,edpop/iD,kartta-labs/iD,AndreasHae/iD,bagage/iD,mapmeld/iD,digidem/iD,mapmeld/iD,kartta-labs/iD