Updates vinyl-fs dependency to use latest version. Fixes #6 .
With gulp^4.0.0 and vinyl-fs ^3.0.0 upgrades, vinyl files being piped to gulp.dest() failed a check which looks for a _isVinyl property. The old version of vinyl-fs used by this repo did not add this property when the file is created by Vinyl, so the error would be thrown by dest().
Updates vinyl-fs dependency to use latest version. Fixes #6 . With gulp^4.0.0 and vinyl-fs ^3.0.0 upgrades, vinyl files being piped to gulp.dest() failed a check which looks for a _isVinyl property. The old version of vinyl-fs used by this repo did not add this property when the file is created by Vinyl, so the error would be thrown by dest().