Update packages devDependencies chimp@0.50.2, eslint@4.9.0, eslint-config-airbnb@16.1.0 and eslint-plugin-import@2.8.0
Update packages devDependencies chimp@0.50.2, eslint@4.9.0, eslint-config-airbnb@16.1.0 and eslint-plugin-import@2.8.0

ggallon/rock,ggallon/rock