Stream support

Now works with browserify bundle stream

```javascript
var dereserve = require('gulp-dereserve'),
var derequire = require('gulp-derequire');
var browserify = require('browserify');
var source = require('vinyl-source-stream');

gulp.task('build', function() {
    var bundleStream = browserify({entries: './index.js', standalone: 'yourModule'}).bundle();
    return bundleStream
        .pipe(source('yourModule.js'))
        .pipe(dereserve())
        .pipe(derequire())
        .pipe(gulp.dest('./build'));
});
```