Gruntfile.js

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

    concat: {
      options: {
        separator: '\n\n'
      },
      dist: {
        src: ['js/bootstrap.js', 'js/owl.carousel.js', 'js/jquery.magnific-popup.js', 'js/gmap3.js', 'js/custom.js', 'js/countdown.js'],
        dest: 'js/all.js'
      }
    },

    uglify: {
      main: {
        files: {
          'js/all.min.js': ['js/all.js']
        }
      },
      purchase: {
        files: {
          'js/purchase.min.js': ['js/purchase.js']
        }
      }
    },

    sass: {
      dist: {
        options: {
          outputStyle: 'compressed'
        },
        files: {
          'css/main-unprefixed.css': '_scss/main.scss'
        }
      }
    },

    autoprefixer: {
      main: {
        src: 'css/main-unprefixed.css',
        dest: 'css/main.css'
      }
    },

    shell: {
      jekyllServe: {
        command: 'jekyll serve --no-watch'
      },

      jekyllBuild: {
        command: 'jekyll build'
      }
    },

    svgmin: {
      dist: {
        files: [{
          expand: true,
          cwd: 'svg',
          src: ['*.svg'],
          dest: 'svg/min'
        }]
      }
    },

    svgstore: {
      options: {
        prefix: 'icon-',
        svg: {
          style: 'display: none;'
        },
        cleanup: ['fill', 'style']
      },
      default: {
        files: {
          '_includes/svg-defs.svg': ['svg/*.svg']
        }
      }
    },

    watch: {
      stylesheets: {
        files: ['_scss/**/*.scss'],
        tasks: ['sass', 'autoprefixer', 'shell:jekyllBuild']
      },
      scripts: {
        files: ['js/**/*.js'],
        tasks: ['concat', 'uglify', 'shell:jekyllBuild']
      },
      site: {
        files: ['**/*.html', '_layouts/*.html', '_posts/*.markdown', '_posts/*.md', '_includes/*.html', '_includes/*.md', '_config.yml', 'js/**/*.js', '_data/*.yml'],
        tasks: ['shell:jekyllBuild']
      },
      svgIcons: {
        files: ['svg/*.svg'],
        tasks: ['svgmin', 'svgstore', 'shell:jekyllBuild']
      },
      options: {
        spawn: false,
        livereload: true
      }
    }
  })

  require('load-grunt-tasks')(grunt)

  // Define the tasks
  grunt.registerTask('serve', ['shell:jekyllServe'])
  grunt.registerTask('default', ['watch'])
  grunt.registerTask('build', [
    'sass',
    'autoprefixer',
    'concat',
    'uglify',
    'svgmin',
    'svgstore',
    'shell:jekyllBuild'
  ])
}