title: Is it possible to install a composer package without updating the composer.json
body: <p>I want to install a composer package, but I only want it in my environment for developing purposes, I don't want other developers to install it or even see that I have it.</p>
  
  <p>What is the equivalent of <code>npm install pack/age</code> without the <code>--save</code> in composer?</p>