title: Is there a way to tell grunt where the node_modules is?
body: <p>I am coding a lot of individual plugins for my websites and I am using <code>grunt</code> to manage the final distribution of them.
  I'm used to write <code>grunt.loadNpmTasks</code> to import a specific plugin from the <code>node_modules</code> directory right into my <code>Gruntfile</code> performing the tasks.</p>
  
  <p>However, in order to do that, i always <code>npm install &lt;package&gt; --save-dev</code> to make the plugin available in the specific plugin i am coding. But as they are dozens of plugins i am maintaining now, i found out the <code>node_modules</code> directories are growing quite bigger, and my backup gets more and more slowly as the node_modules directories are full of files.</p>
  
  <p>Is there a way to centralize the plugins ? so I can reunite all the node_modules directories in one ? and tell <code>grunt</code> where this central repository stands as to load a particular plugin ?</p>
  
  <p><strong>edit</strong>: I tried to install <code>grunt-contrib-less</code> globally (-g) for the test, but it still persist to say <code>Local Npm module "grunt-contrib-less" not found. Is it installed?</code></p>