title: After installation of Gulp: “no command 'gulp' found”
body: <p>After installing <a href="http://gulpjs.com/" rel="noreferrer">gulp.js</a> via npm, I receive a <code>no command 'gulp' found</code> error when running the <code>gulp</code> command from the same directory it was installed into.</p>
  
  <p>When looking under the <code>node_modules/.bin/</code> directory, I can see the <code>gulp</code> executable there.</p>
  
  <p>Is there something wrong with my npm installation?</p>