title: Git ignore node_modules
body: <p>I have a file structure like this</p>
  <p>master is:
  ~/Exercism/javascript</p>
  <p>exercise files are:</p>
  <pre><code>~/Exercism/javascript/hello-world
  ~/Exercism/javascript/protein-translation
  ~/Exercism/javascript/resistor-color
  ...etc
  </code></pre>
  <p>EACH one of these folders has a node_modules folder that I want to ignore</p>
  <p>My .gitignore file is located in:</p>
  <pre><code>~/Exercism/javascript
  </code></pre>
  <p>content of .gitignore:</p>
  <pre><code>**/node_modules/
  </code></pre>
  <p>git still won't ignore the node_modules folders. Is there something I need to run in git? Is my folder in the right place&gt;</p>
  <p>I have not committed anything yet but the repo is initiated</p>