title: How can I make multiple projects share node_modules directory?
body: <p>Whenever I make projects, I have to download all dependencies of node modules. Without copying the node_modules, Is there anyway to share the central node_modules in multiple projects?</p>
  
  <p>like the followings, I have to run many commands every time..</p>
  
  <pre><code>npm install gulp-usemin                                                                        
  npm install gulp-wrap
  npm install gulp-connect
  npm install gulp-watch
  npm install gulp-minify-css
  npm install gulp-uglify
  npm install gulp-concat
  npm install gulp-less
  npm install gulp-rename
  npm install gulp-minify-html
  </code></pre>