title: Using gulp-modernizr how do I specify feature options
body: <p>My <a href="http://modernizr.com/download/?-backdropfilter-backgroundsize-bgpositionxy-bgrepeatspace_bgrepeatround-bgsizecover-borderradius-cssanimations-cssfilters-csspointerevents-csspseudoanimations-csspseudotransitions-cssremunit-csstransforms-csstransitions-customevent-devicemotion_deviceorientation-eventlistener-flexbox-fontface-json-nthchild-opacity-overflowscrolling-rgba-svg-svgasimg-svgfilters-touchevents-xhrresponsetypejson-domprefixes-setclasses-shiv" rel="nofollow">custom Moderniser build</a> includes the following options which I am trying to inject into the <a href="https://github.com/doctyper/gulp-modernizr" rel="nofollow">gulp-modernizr</a> tool as follows:</p>
  
  <pre><code>gulp.task('modernizr', function() {
    allUISrcPlusSassSrc
      .pipe(modernizr({
        options: [
          'backdropfilter',
          'backgroundsize',
          'bgpositionxy',
          'bgrepeatspace_bgrepeatround',
          'bgsizecover',
          'borderradius',
          'cssanimations',
          'cssfilters',
          'csspointerevents',
          'csspseudoanimations',
          'csspseudotransitions',
          'cssremunit',
          'csstransforms',
          'csstransitions',
          'customevent',
          'devicemotion_deviceorientation',
          'eventlistener',
          'flexbox',
          'fontface',
          'json',
          'nthchild',
          'opacity',
          'overflowscrolling',
          'rgba',
          'svg',
          'svgasimg',
          'svgfilters',
          'touchevents',
          'xhrresponsetypejson',
          'domprefixes',
          'setclasses',
          'shiv'
        ]
      }))
      .pipe(gulp.dest("./output/js/vendor/"))
  });
  </code></pre>
  
  <p>But running this leads to <code>Building your customized Modernizr{ [Error: Error: ENOENT: no such file or directory, open '/Users/davesag/src/test-project/node_modules/modernizr/lib/../src/backgroundsize.js'</code></p>
  
  <p>Looking in <code>./node_modules/modernizr/src</code> I can't see any files that match these options.  Am I just misunderstanding something?  These feature names came straight from my <a href="http://modernizr.com/download/?-backdropfilter-backgroundsize-bgpositionxy-bgrepeatspace_bgrepeatround-bgsizecover-borderradius-cssanimations-cssfilters-csspointerevents-csspseudoanimations-csspseudotransitions-cssremunit-csstransforms-csstransitions-customevent-devicemotion_deviceorientation-eventlistener-flexbox-fontface-json-nthchild-opacity-overflowscrolling-rgba-svg-svgasimg-svgfilters-touchevents-xhrresponsetypejson-domprefixes-setclasses-shiv" rel="nofollow">custom-built modernizr file as downloaded previously from the moderniser website</a> includes the following options which I am trying to inject into the <a href="https://github.com/doctyper/gulp-modernizr" rel="nofollow">gulp-modernizr</a>.</p>
  
  <p>Leaving out the options it builds okay but without the options I'm not getting any feature-classes injected into the HTML element of my page. The supposed auto-detect stuff does not seem to be working.</p>
  
  <p>I checked the <a href="https://github.com/doctyper/customizr#config-file" rel="nofollow">Customizr page as per the docs</a> and it seems what I am doing is right. But clearly that's not the case.</p>
  
  <p>How should I be doing this?</p>