title: Composer loading from cache
body: <p>i ran in a problem using composer for installing/uninstalling some dependencies in laravel which coming back after deleting them from <code>composer.json</code> and deleting their vendor folder, i initially used dflydev's markdown package but now i wanted to change it to michelf's php-markdown, but i cant uninstall the old one since it comes back loaded from cache, which i checked at <code>AppData\Roaming\Composer</code> and is empty, any clue on to why this is happening?</p>
  
  <pre><code>  - Installing dflydev/markdown (dev-master dee1f7a)
      Loading from cache
  </code></pre>