language: node_js
node_js:
  - "node"
  - "lts/*"
  - "6"

cache:
  directories:
    - node_modules

install:
  - npm install

services:
  - redis-server

language: node_js
node_js:
  - "node"
  - "lts/*"

cache:
  directories:
    - node_modules

install:
  - npm install

services:
  - redis-server

Remove node 6 from the CI
Remove node 6 from the CI