Set npm package versions to latest

[renekreupl]

{
"name": "boilerplate",
"version": "1.1.0",
"repository": "https://github.com/phoenixlabs/scss-boilerplate",
"devDependencies": {
"gulp": "latest",
"gulp-autoprefixer": "latest",
"gulp-concat": "latest",
"gulp-cssmin": "latest",
"gulp-install": "latest",
"gulp-livereload": "latest",
"gulp-notify": "latest",
"gulp-order": "latest",
"gulp-sass": "latest",
"gulp-uglify": "latest",
"gulp-watch": "latest"
}
}