title: Error: Couldn't find preset "es2015" relative to directory "/Users/username"
body: <p>I get the following error when trying to use gulp-babel:</p>
  
  <blockquote>
    <p>Error: Couldn't find preset "es2015" relative to directory
    "/Users/username"</p>
  </blockquote>
  
  <p>I have the es2015 preset installed globally and locally so can't see why this would be an issue.</p>
  
  <p>Below is my gulp set up and package.json.</p>
  
  <pre><code>var babel = require('gulp-babel');
  var es2015 = require('babel-preset-es2015');
  
  gulp.task('babel', function() {
      return gulp.src('./app/main.js')
      .pipe(babel({
          presets: [es2015]
      }))
      .pipe(gulp.dest('dist'));
  });
  </code></pre>
  
  <p>Package.json</p>
  
  <pre><code>  "devDependencies": {
      "babel-preset-es2015": "^6.3.13",
      "babel-preset-es2015-node5": "^1.1.1",
      "browser-sync": "^2.11.0",
      "gulp": "^3.9.0",
      "gulp-babel": "^6.1.1",
      "gulp-stylus": "^2.2.0"
    }
  </code></pre>
  
  <p>I am using node v5.1.0 and babel v6.4.0</p>
  
  <p>Here is the terminal ouput</p>
  
  <p><a href="http://i.stack.imgur.com/JMwPp.png">terminal output</a></p>