title: Package that is linked with npm link doesn't update
body: <p>I have two modules - my main project and a component library - where I want to link the lib to the main project. Both is working with webpack and react. So I did:</p>
  
  <p>In comp-lib dir:</p>
  
  <blockquote>
    <p>npm link</p>
  </blockquote>
  
  <p>In project dir:</p>
  
  <blockquote>
    <p>npm link comp-lib</p>
  </blockquote>
  
  <p>The package is showing up in the node_modules folder, but when I work on the component library the changes are not reflected in main project. What am I missing out? </p>
  
  <p>I couldn't really find something about this issue on Google and the npm link doc just says about the example: "Now, any changes to ~/projects/node-redis will be reflected in ~/projects/node-bloggy/node_modules/node-redis/." </p>