Adds travis CI support (#64)

* Adds travsi CI support

* Adds trusty dist to travis runs

* Changes to install latest `npm` version

* Adds strict mode

* Adds linting for supported es6 features.

* Adds stages to travis job

* Changes spread operator to apply

* Installs `libnotify-bin` on travis test machine

* Changes to only run apt-get on linux

.eslintrc.json

@@ -1,12 +1,14 @@
 {
-    "extends": "airbnb-base",
+    "extends": ["airbnb-base", "eslint:recommended", "plugin:node/recommended"],
     "plugins": [
-        "import"
+        "import",
+        "node"
     ],
     "rules": {
       "no-console": ["error", { "allow": ["warn", "error"] }]
     },
     "env": {
-        "node": true
+        "node": true,
+        "es6": true
     }
 }

.travis.yml

@@ -0,0 +1,21 @@
+language: node_js
+dist: trusty
+os:
+  - linux
+  - osx
+node_js:
+- '4'
+- '5'
+- '6'
+- '7'
+- 'node'
+before_install:
+  - npm i -g npm@latest
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get -qq update; fi
+  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get install -y libnotify-bin; fi
+jobs:
+  include:
+    - stage: lint
+      script: npm run lint
+    - stage: test
+      script: npm test

lib/growl.js

@@ -1,3 +1,5 @@
+'use strict';
+
 // Growl - Copyright TJ Holowaychuk <tj@vision-media.ca> (MIT Licensed)
 
 /**
@@ -292,7 +294,7 @@ function growl(msg, opts, callback) {
       const splitCmd = command.split(' ');
       if (splitCmd.length > 1) {
         command = splitCmd.shift();
-        args.push(...splitCmd);
+        Array.prototype.push.apply(args, splitCmd);
       }
       if (customCmd.indexOf('%s') < 0) {
         args.push(message);

package.json

@@ -24,5 +24,8 @@
   },
   "engines": {
     "node": ">=4.x"
+  },
+  "dependencies": {
+    "eslint-plugin-node": "^5.1.0"
   }
 }