007design/gulp-prefix — pull request #4 by dhcmrlchtdj (2014-11-05 11:15:03+00:00)
Title: fix for empty file

```
gulp.task('prefix', function() {
var prefixUrl = 'http://mydomain.com/asset';

gulp.src('empty.html')
.pipe(prefix(prefixUrl, null, true))
.pipe(gulp.dest('build'));
});
```

```
Error: File.contents can only be a Buffer, a Stream, or null.
```

i create a empty file by `touch`, and gulp-prefix broken...