Gulp 4.x.x repo url moved

[illvart]

Check Browser Reloading section on the doc + Gulp.js, and the Gulp repository url (follow this documentation) not found, maybe changed to this url https://github.com/gulpjs/gulp/blob/master/docs/recipes/minimal-browsersync-setup-with-gulp4.md. Thanks!

[sartoriusrex]

I forked and corrected the issue most recently (08/08/2019), and looking back, there have been 3 separate corrects for the same issue. It seems there's a problem with the CI/CL pipeline where Travis CI doesn't correctly execute, stopping at the Docker Build.