Travis CI .travis.yml file for Node.js 4.x, NATS, RethinkDB, and Redis server

.travis.yml

language: node_js
node_js:
  - "4.2.1"
sudo: required
dist: trusty
before_install:
  - mkdir -p gnatsd
  - "wget https://github.com/nats-io/gnatsd/releases/download/v0.6.4/gnatsd-v0.6.4-linux-amd64.tar.gz -qO - | tar -zxvC gnatsd/"
  - export PATH=$PATH:$PWD/gnatsd/
  - gnatsd&
  - "source /etc/lsb-release && echo 'deb http://download.rethinkdb.com/apt trusty main' | sudo tee /etc/apt/sources.list.d/rethinkdb.list"
  - "wget -qO- http://download.rethinkdb.com/apt/pubkey.gpg | sudo apt-key add -"
  - sudo apt-get update -qq
  - sudo apt-get install rethinkdb -y
services:
  - rethinkdb
  - redis-server
before_script:
  - rethinkdb --daemon