chore(package): update eslint to version 3.18.0
chore(package): update eslint to version 3.18.0

https://greenkeeper.io/
adube/ngeo,Jenselme/ngeo,camptocamp/ngeo,camptocamp/ngeo,camptocamp/ngeo,Jenselme/ngeo,Jenselme/ngeo,adube/ngeo,Jenselme/ngeo,camptocamp/ngeo,adube/ngeo,camptocamp/ngeo,adube/ngeo