Gruntfile.js

module.exports = function(grunt) {

  require('time-grunt')(grunt);

  //----------------------------------------------------------------------------
  // @begin: grunt plugins

  require('jit-grunt')(grunt, {
    useminPrepare: 'grunt-usemin'
  });

  // @end: grunt plugins
  //----------------------------------------------------------------------------
  // @begin: grunt tasks config

  grunt.initConfig({

    pkg: grunt.file.readJSON('package.json'),

    config: require('./grunt/config')

  });

  // load tasks config per file
  grunt.loadTasks('grunt/config_task');

  // @end: grunt tasks config
  //============================================================================
  // @begin: grunt tasks =======================================================
  //============================================================================

  grunt.registerTask('projectInfoMsg', function() {
    var pkg = grunt.config.get('pkg');

    grunt.log.writeln('');
    grunt.log.writeln('project: ' + pkg.name + ' v' + pkg.version);
    grunt.log.writeln('description: ' + pkg.description);
  });

  grunt.registerTask('validate', ['newer:jshint', 'newer:lintspaces']);

  //----------------------------------------------------------------------------
  // @begin: bower

  grunt.registerTask('bower:dev', ['clean:bower', 'copy:bower_jquery']);

  grunt.registerTask('bower:dist', ['bower:dev', 'copy:bower_dist']);

  // @end: bower
  //----------------------------------------------------------------------------
  // @begin: build

  grunt.registerTask('build:index', [
    'copy:build_index',
    'useminPrepare',
    'concat',
    'cssmin',
    'uglify',
    'filerev',
    'usemin',
    'copy:builded2dist',
    'clean:build',
    'htmlmin:dist'
  ]);

  grunt.registerTask('build', [
    'clean:dist',
    'validate',
    'build:index',
    'bower:dist'
  ]);

  // @end: build
  //----------------------------------------------------------------------------
  // @begin: main

  grunt.registerTask('default', [
    'clean',
    'validate',
    'bower:dev',
    'copy:src2build',
    'browserSync:dev',
    'projectInfoMsg',
    'watch'
  ]);

  grunt.registerTask('release', ['build', 'projectInfoMsg']);

  grunt.registerTask('preview', ['release', 'browserSync:dist']);

  // @end: main
  //============================================================================
  // @end: grunt tasks =========================================================
  //============================================================================
};