title: Local package.json exists, but node_modules missing
body: <p>I am trying to start a Redux application I just cloned from a GitHub repository. </p>
  
  <p>I tried to run it with the following command </p>
  
  <pre><code>npm start
  </code></pre>
  
  <p>I am getting this error    </p>
  
  <pre><code>&gt; react-redux@1.0.0 start /home/workspace/assignment
  &gt; webpack-dev-server --config ./configs/webpack/webpack.config.development.js
  
  sh: 1: webpack-dev-server: not found
  npm ERR! file sh
  npm ERR! code ELIFECYCLE
  npm ERR! errno ENOENT
  npm ERR! syscall spawn
  npm ERR! react-redux@1.0.0 start: `webpack-dev-server --config ./configs/webpack/webpack.config.development.js`
  npm ERR! spawn ENOENT
  npm ERR! 
  npm ERR! Failed at the react-redux@1.0.0 start script.
  npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
  npm WARN Local package.json exists, but node_modules missing, did you mean to install?
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     /home/.npm/_logs/2018-05-15T16_32_44_571Z-debug.log
  </code></pre>
  
  <p>Any help will be appreciated</p>