Merge pull request greenkeeperio#25 from Koslun/patch-2

feat(ngxs): Add group for NGXS

Merge pull request greenkeeperio#26 from travi/material-ui

feat(material-ui): Add the docs package to the material-ui list

Merge pull request greenkeeperio#23 from travi/gatsby

feat(gatsby): Add gatsby packages

Merge pull request greenkeeperio#18 from prymitive/fortawesome

feat: add @FortAwesome definitions

Merge pull request greenkeeperio#21 from greenkeeperio/dont_use_npm_ci

fix(travis): use npm i instead of npm ci

Merge pull request greenkeeperio#20 from greenkeeperio/downgrade_npm

fix: use npm version 6.1.0

Merge pull request greenkeeperio#19 from greenkeeperio/sync_package_j…

…sons

fix(package): keep package.json and package-lock.json in sync

Merge pull request greenkeeperio#14 from Mokto/patch-1

feat: add definitions for Appcenter

Merge pull request greenkeeperio#9 from Alorel/patch-1

feat: add polyfill-io-aot definitions

Merge pull request greenkeeperio#8 from skidding/patch-1

feat: Add react-cosmos