code: function copyFile (src, done) {
          var dest = path.join(outdir, path.relative(compiler.dirname, src))
          var dirname = utils.dirname(dest)
  
          if (dirname === dest) {
            copy(src, dest, compiler.dirname, done)
          } else {
            mkdirp(dirname, function (err) {
              if (err) return done(err)
              copy(src, dest, compiler.dirname, done)
            })
          }
        }
docs: TODO: It'd be sick if we could optimize our paths to assets, add etags to our tags and put them in the right dir.