gulp-util is deprecated - should be migrated away from

[adamxberlin]

The gulp team recommends upgrading migrating away from gulp-util using the guidelines in the article below:

https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5

[rbatllet]

This could be the reason why it no longer works

See: #37

[adamxberlin]

Yeup. More than likely related.

[hustxiaoc]

#34

[hustxiaoc]

fixed #34