Drop Node 6 in CI, add node 10

.travis.yml

@@ -3,8 +3,8 @@ sudo: false
 language: node_js
 
 node_js:
-  - "6"
   - "8"
+  - "10"
 
 matrix:
   fast_finish: true

CONTRIBUTING.md

@@ -1 +1 @@
-Please see the [Contributing to grunt](http://gruntjs.com/contributing) guide for information on contributing to this project.
+Please see the [Contributing to grunt](https://gruntjs.com/contributing) guide for information on contributing to this project.

README.md

@@ -6,7 +6,7 @@
 
 ## Getting Started
 
-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:
+If you haven't used [Grunt](https://gruntjs.com/) before, be sure to check out the [Getting Started](https://gruntjs.com/getting-started) guide, as it explains how to create a [Gruntfile](https://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:
 
 ```shell
 npm install grunt-contrib-coffee --save-dev
@@ -165,4 +165,4 @@ For more examples on how to use the `expand` API to manipulate the default dynam
 
 Task submitted by [Eric Woroshow](http://ericw.ca/)
 
-*This file was generated on Wed Sep 27 2017 16:29:13.*
+*This file was generated on Fri Mar 15 2019 10:02:44.*

appveyor.yml

@@ -5,10 +5,10 @@ version: "{build}"
 # What combinations to test
 environment:
   matrix:
-    - nodejs_version: "6"
-      platform: x86
     - nodejs_version: "8"
       platform: x86
+    - nodejs_version: "10"
+      platform: x86
 
 install:
   - ps: Install-Product node $env:nodejs_version $env:platform

package.json

@@ -9,7 +9,7 @@
   "repository": "gruntjs/grunt-contrib-coffee",
   "license": "MIT",
   "engines": {
-    "node": ">=0.10.0"
+    "node": ">=8"
   },
   "main": "tasks/coffee.js",
   "scripts": {