GruntfileUglify.js

// Part of Gruntfile.js, this is the Uglify section
uglify: {
    options: {
        // Grunt can replace variables names, but may not be a good idea for you, I leave
        // this option as false
        mangle: false
    },
    js: {
        // Grunt will search for "**/*.js" when the "minify" task
        // runs and build the appropriate src-dest file mappings then, so you
        // don't need to update the Gruntfile when files are added or removed.
        files: [{
            expand: true,
            cwd: '<%= paths.js %>',
            src: '**/*.js',
            dest: '<%= paths.js %>min',
            ext: '.min.js',
        }],
    }
},

// This is at the end of the file, the plugin section:
// Plugin loading
grunt.loadNpmTasks('grunt-contrib-compass');
grunt.loadNpmTasks('grunt-contrib-sass');
grunt.loadNpmTasks('grunt-contrib-concat');
grunt.loadNpmTasks('grunt-contrib-uglify');