How about a way to pass on inputUrl and abspath to vulcanize?

[BootsSiR]

If you keep your elements at a different path with vulcanize you need to specify the abspath parameter so it can find everything. Also, in some cases you need to pass along the inputUrl parameter as well. How about a method to pass these on through polybuild? Maybe something like:

var gulp = require('gulp');
var polybuild = require('polybuild');

gulp.task('build', function() {
  return gulp.src('index.html')
  .pipe(polybuild({ vulcanizeParams : { absPath: '/myelements', inputUrl: '/other/elements.html'))
  .pipe(gulp.dest('.'))
;
})

and just pass on those vulcanizeParams to vulcanize?