title: How to install intervention image with Windows
body: <p>In Intervention Image's website, it says that in order to install the most recent version, I must run the following command : </p>
  
  <pre><code>php composer.phar require intervention/image
  </code></pre>
  
  <p>I am using Windows 8.1 and I guess this isn't going to work. I already tried and it says : Could not open input file: composer.phar</p>
  
  <p>Am I missing something very easy?</p>