language: node_js
node_js:
    - "4"
env:
    - CXX=g++-4.8
install:
    - npm install -g npm@latest
    - npm cache clean
    - npm install --dev
    - npm install -g mocha
services:
    - mongodb
    - redis-server
addons:
    apt:
        sources:
            - ubuntu-toolchain-r-test
        packages:
            - g++-4.8

language: node_js
node_js:
    - "6"
env:
    - CXX=g++-4.8
install:
    - npm install -g npm@latest
    - npm cache clean
    - npm install --dev
    - npm install -g mocha
services:
    - mongodb
    - redis-server
addons:
    apt:
        sources:
            - ubuntu-toolchain-r-test
        packages:
            - g++-4.8

Change CI node version to 6
Change CI node version to 6
