title: How to add project.lock.json file to gitignore
body: <p>I am trying something like below:</p>
  
  <pre><code>#DNX
  project.lock.json
  </code></pre>
  
  <p>and</p>
  
  <pre><code>*.lock.json
  </code></pre>
  
  <p>but it does not seem to be ignoring these files.</p>