title: prevent "abort" in windows batch for npm install
body: <p>I am writing a bat file to auto install npm packages and install compass. The bat is simple as below:</p>
  
  <pre><code>npm install -g bower
  npm install -g grunt-cli
  npm install
  gem update --system --verbose
  gem install compass --verbose
  pause
  </code></pre>
  
  <p>I find that after each command, the bat file auto aborts and won't run next command. How can I make this simple script run continuously and able to re-run many times?</p>