Is there a ready made gruntfile available for Drupal Bootstrap Child Theme (SASS) This applies to Drupal 7. 

I am fairly new to grunt and can't really make much sense of out of a gruntfile. I've just started with a drupal child theme (which has been created off bootstrap SASS startkit).

Can you point out a readymade grunt file which I can use to watch and compile my scss (output as css) and minify js.
module.exports = function(grunt) {
grunt.initConfig({
compass: {
 dist: {
    options: {
      sassDir: 'sass',
      cssDir: 'css',
      environment: 'production',
    },
  },
},
watch: {
  css: {
    files: ['sass/*.scss'],
    tasks: ['compass'],
  },
},
});
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.loadNpmTasks('grunt-contrib-compass');
grunt.registerTask('default', ['compass']);
};