title: Update Angular2 PrimeNG version 1.1.4 to last version
body: <p>I'm relatively new to angular2, so I was wondering how could I update my version(1.1.4) to last version!</p>
  
  <p>I'm working on version 2.0.0-rc.5 of angular2.</p>
  
  <p>Already tried </p>
  
  <pre><code>npm install primeng --save
  </code></pre>
  
  <p>but package.json still holds this value: ""primeng": "^1.1.4","</p>
  
  <p>the package.json from the root directory of angular, and also of the primeng in node_modules directory</p>