Remove old versions of nodejs and clean things up

Fix #54

.travis.yml

@@ -3,11 +3,9 @@ sudo: false
 language: node_js
 
 node_js:
-  - 0.10
-  - 0.12
   - 4
   - 5
-  - stable
+  - 6
 
 cache:
   directories:

circle.yml

@@ -1,12 +1,12 @@
 machine:
   node:
-    version: stable
+    version: 6
 
 
 dependencies:
   pre:
     # Install grunt-cli as we’re using a custom node version.
-    - which grunt || npm install -g grunt-cli
+    - npm install -g grunt-cli
 
 test:
   post:

package.json

@@ -28,11 +28,12 @@
     "glob": "^7.0.0"
   },
   "engines": {
-    "node": ">=0.10.0"
+    "node": ">= 4",
+    "npm": ">= 3"
   },
   "devDependencies": {
     "eslint": "^3.9.1",
-    "grunt": "~1.0.1",
+    "grunt": "^1.0.1",
     "grunt-contrib-clean": "^1.0.0",
     "grunt-contrib-nodeunit": "^1.0.0",
     "grunt-eslint": "^18.0.0",

readme.md

@@ -9,7 +9,6 @@
 > This plugin was inspired by https://gist.github.com/cowboy/3819170.
 
 ## Getting started
-This plugin requires Grunt `0.4.5`
 
 If you haven't used [Grunt](http://gruntjs.com/) before, be sure to check out the [Getting Started](http://gruntjs.com/getting-started) guide, as it explains how to create a [Gruntfile](http://gruntjs.com/sample-gruntfile) as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command: