Handy plugin load-grunt-tasks reduces...
// Load Grunt plugins.
grunt.loadNpmTasks('grunt-browser-sync');
grunt.loadNpmTasks('grunt-contrib-compass');
grunt.loadNpmTasks('grunt-contrib-jshint');
grunt.loadNpmTasks('grunt-contrib-uglify');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-postcss');
to
// Load Grunt plugins.
require('load-grunt-tasks')(grunt);
More on supercharging Grunt here.