gruntfile.js

module.exports = function(grunt) {
  grunt.initConfig({
      pkg: grunt.file.readJSON('package.json'),

        //Uglify you js
      uglify: {
          build: {
              src: 'src/js/common.js',
              dest: 'dist/js/common.min.js'
          }
      },

        //Minify you images
      imagemin: {
          dynamic: {
              files: [{
                  expand: true,
                  cwd: 'src/images/',
                  src: ['**/*.{png,jpg,gif,svg}'],
                  dest: 'dist/images/'
              }]
          }
      },

        //You can to hint you js
      jshint:{
          options: {
              reporter: require('jshint-stylish')
          },

          main: [
              'src/js/*.js'
          ]
      },

        //Less to css
      less: {
          development: {
              options: {
                  paths: ['src/styles'],
                  compress: true,
                  yuicompress: true,
                  optimization: 2
              },
              files: {
                  'dist/css/style.css': 'src/styles/style.less'
              }
          }
      },
        // Base html build
      htmlbuild: {
          dev: {
              src: 'src/html/*.html',
              dest: 'dist/html/',
              options: {
                  basePath: 'src/html/'
              }
          }
      },

        //Post process autoprefix
      autoprefixer: {
          options: {
              browsers: ['last 2 versions', 'ie 8', 'ie 9']
          },
          main: {
              expand: true,
              flatten: true,
              src: 'dist/css/*.css',
              dest: 'dist/css/'
          }
      },

        //Auto-watching you changes (type CTRL + S for save changes & it`ll work)
      watch: {
          //Scripts change
          scripts: {
              files: ['src/**/*.js'],
              tasks: ['jshint','uglify']

          },
          //Less files change
          css: {
              files: ['src/**/*.less'],
              tasks: ['less','autoprefixer']
          },
          //HTML files change
          html: {
              files: ['src/html/*.html'],
              tasks: ['htmlbuild']
          }
      }

  });

    //Load Tasks
    grunt.loadNpmTasks('grunt-html-build');
    grunt.loadNpmTasks('grunt-contrib-uglify');
    grunt.loadNpmTasks('grunt-contrib-imagemin');
    grunt.loadNpmTasks('grunt-contrib-jshint');
    grunt.loadNpmTasks('grunt-contrib-less');
    grunt.loadNpmTasks('grunt-autoprefixer');
    grunt.loadNpmTasks('grunt-contrib-watch');

    //Register Tasks
    grunt.registerTask('default', ['uglify', 'imagemin', 'jshint', 'less', 'autoprefixer','htmlbuild']);
};