emacs projectile - "you are not in a project" displayed when in directory
<p>I've just created a new folder of javascript files.</p>

<p>The structure is:</p>

<pre><code>.gitignore
README.md
build
node_modules
package.json
src
webpack.config.js
</code></pre>

<p>But when I try and find a file with <code>C-c p f</code>, I get a message in the status bar that states </p>

<blockquote>
  <p>You're not in a project</p>
</blockquote>

<p>I have other projects with the same structure that work fine so I don't know what is going on.</p>