update appveyor config

Author: vladikoff

README.md

@@ -1,11 +1,11 @@
-# grunt-contrib-concat v0.5.0 [![Build Status: Linux](https://travis-ci.org/gruntjs/grunt-contrib-concat.png?branch=master)](https://travis-ci.org/gruntjs/grunt-contrib-concat) <a href="https://ci.appveyor.com/project/gruntjs/grunt-contrib-concat"><img src="https://ci.appveyor.com/api/projects/status/43qbw6jsp3rb2rh6/branch/master" alt="Build Status: Windows" height="18" /></a>
+# grunt-contrib-concat v0.5.0 [![Build Status: Linux](https://travis-ci.org/gruntjs/grunt-contrib-concat.svg?branch=master)](https://travis-ci.org/gruntjs/grunt-contrib-concat) [![Build Status: Windows](https://ci.appveyor.com/api/projects/status/l42173901ms416km/branch/master?svg=true)](https://ci.appveyor.com/project/gruntjs/grunt-contrib-concat/branch/master)
 
 > Concatenate files.
 
 
 
 ## Getting Started
-This plugin requires Grunt `~0.4.0`
+This plugin requires Grunt `>=0.4.0`
 
 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:
 
@@ -173,7 +173,7 @@ Like the previous example, in this example running `grunt concat` will build two
 
 This example differs in that both files are built under the same target.
 
-Using the `files` object, you can list any number of source-destination pairs.
+Using the `files` object, you can have list any number of source-destination pairs.
 
 ```js
 // Project configuration.
@@ -296,4 +296,4 @@ grunt.initConfig({
 
 Task submitted by ["Cowboy" Ben Alman](http://benalman.com/)
 
-*This file was generated on Sat Jul 19 2014 19:25:49.*
+*This file was generated on Wed Feb 18 2015 22:55:48.*

package.json

@@ -40,5 +40,5 @@
   "files": [
     "tasks"
   ],
-  "appveyor_id": "43qbw6jsp3rb2rh6"
+  "appveyor_id": "l42173901ms416km"
 }