Gruntfile.js

module.exports = function(grunt) {

  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),
    sass: {
      dist: {
        options: {
          style: 'expanded'
        },
        files: {
          'styles/app.css': 'styles/app.scss',
        }
      }
    },
    concat: {
      options: {
        separator: ';'
      },
      dist: {
        src: ['scripts/*.js'],
        dest: 'dist/app.js'
      }
    },
    uglify: {
      options: {
        banner: '/*! <%= pkg.name %> <%= grunt.template.today("dd-mm-yyyy") %> */\n'
      },
      dist: {
        files: {
          'dist/app.min.js': ['<%= concat.dist.dest %>']
        }
      }
    },
    jshint: {
      files: ['Gruntfile.js', 'scripts/app.js'],
      options: {
        // options here to override JSHint defaults
        globals: {
          jQuery: true,
          console: true,
          module: true,
          document: true
        }
      }
    },
    watch: {
      files: ['index.html', 'scripts/*.js', 'styles/*.scss'],
      tasks: [/*'jshint',*/'sass', 'concat', 'uglify'],
      options: {
        livereload: true,
      }
    }
  });

  grunt.loadNpmTasks('grunt-contrib-jshint');
  grunt.loadNpmTasks('grunt-contrib-sass');
  grunt.loadNpmTasks('grunt-contrib-watch');
  grunt.loadNpmTasks('grunt-ember-templates');
  grunt.loadNpmTasks('grunt-contrib-concat');
  grunt.loadNpmTasks('grunt-contrib-uglify');

  grunt.registerTask('default', [/*'jshint',*/'sass', 'concat', 'uglify']);

};