[FIX] under dependencie in package.json for gulp version

[r4faelaugusto]

The gulp version in package.json is mentioned as
"gulp": "github:gulpjs/gulp#4.0",

Which throws the below error,

npm WARN deprecated [email protected]: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated [email protected]: gulp-util is deprecated - replace it, following the guidelines at https://medium.com/gulpjs/gulp-util-ca3b1f9f9ac5
npm WARN deprecated [email protected]: please upgrade to graceful-fs 4 for compatibility with current and future versions of Node.js
npm ERR! code 1
npm ERR! Command failed: C:\Program Files\Git\cmd\git.EXE checkout 4.0
npm ERR! error: pathspec '4.0' did not match any file(s) known to git
npm ERR!

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\rafa\AppData\Roaming\npm-cache_logs\2019-02-13T18_52_53_136Z-debug.log

Seems like this should like this,

"gulp": "github:gulpjs/gulp#v4.0.0"

As there is no more a 4.0 tag https://github.com/gulpjs/gulp