.jshintrc

{
    "bitwise": true,
    "eqeqeq": true,
    "eqnull": true,
    "immed": true,
    "newcap": true,
    "esnext": true,
    "latedef": true,
    "noarg": true,
    "node": true,
    "undef": true,
    "browser": true,
    "trailing": true,
    "jquery": true,
    "curly": true,
    "trailing": true,
    "smarttabs": true
}

config.rb

# Require any additional compass plugins here.

# Set this to the root of your project when deployed:
http_path = "/"
css_dir = "/assets/css"
sass_dir = "/assets/sass"
images_dir = "/assets/images"
javascripts_dir = "/assets/js"

# You can select your preferred output style here (can be overridden via the command line):
# output_style = :expanded or :nested or :compact or :compressed
output_style = :compressed

# To enable relative paths to assets via compass helper functions. Uncomment:
relative_assets = true

# To disable debugging comments that display the original location of your selectors. Uncomment:
line_comments = false


# If you prefer the indented syntax, you might want to regenerate this
# project again passing --syntax sass, or you can uncomment this:
# preferred_syntax = :sass
# and then run:
# sass-convert -R --from scss --to sass sass scss && rm -rf sass && mv scss sass

Gemfile

source 'https://rubygems.org'

gem 'rake'
gem 'jekyll'
gem 'compass'

Gruntfile.js

"use strict";

module.exports = function(grunt) {

    // Load all grunt tasks
    require('load-grunt-tasks')(grunt);

    var appConfig = {

        // Dirs
        dirs: {
            js: "assets/js"
        },

        // Metadata
        pkg: grunt.file.readJSON("package.json"),
        banner:
        "\n" +
        "/*\n" +
         " * -------------------------------------------------------\n" +
         " * Projeto: <%= pkg.title %>\n" +
         " * Versão: <%= pkg.version %>\n" +
         " *\n" +
         " * Autor:  <%= pkg.author.name %>\n" +
         " * Site:     <%= pkg.author.url %>\n" +
         " * Contato: <%= pkg.author.email %>\n" +
         " *\n" +
         " *\n" +
         " * Copyright (c) <%= grunt.template.today(\"yyyy\") %> <%= pkg.author.name %>\n" +
         " * -------------------------------------------------------\n" +
         " */\n" +
         "\n",

        // Watch Task
        watch: {
            js: {
                files: ["<%= jshint.all %>"],
                tasks: ["jshint", "uglify"]
            }
        },

        // Linting
        jshint: {
            options: {
                jshintrc: ".jshintrc"
            },
            all: [
                "Gruntfile.js",
                "<%= dirs.js %>/main.js"
            ]
        },

        // Minify
        uglify: {
            options: {
                mangle: false,
                banner: "<%= banner %>"
            },
            dist: {
                files: {
                    "<%= dirs.js %>/app.min.js": [ "<%= dirs.js %>/main.js" ],
                    "<%= dirs.js %>/legacy.min.js": [ "<%= dirs.js %>/legacy/*" ]
                }
            }
        }

    };

    // Init Config
    grunt.initConfig(appConfig);


    // Register tasks
    // --------------------------
    grunt.registerTask( "default", [ "jshint", "uglify", "watch" ]);
    grunt.registerTask( "build", [ "jshint", "uglify" ]);

};

package.json

{
  "name": "vitorbritto",
  "version": "1.0.0",
  "title": "Vitor Britto",
  "homepage": "http://www.vitorbritto.com/blog",
  "description": "Desenvolvedor Web",
  "author": {
    "name": "Vitor Britto",
    "url": "http://www.vitorbritto.com",
    "email": "code[at]vitorbritto.com.br"
  },
  "repository": {
    "type": "git",
    "url": "git://github.com/vitorbritto/blog.git"
  },
  "devDependencies": {
    "grunt": "~0.4.1",
    "grunt-contrib-watch": "~0.4.3",
    "grunt-contrib-uglify": "~0.2.1",
    "grunt-contrib-jshint": "~0.5.4",
    "load-grunt-tasks": "~0.1.0"
  }
}

Rakefile.rb

# Rakefile
# Author: Vitor Britto
# Version: 1.0.0
# Made with Ruby, Coffee and Love. :)

task default: [:watch]

task :build do
  build_sass
  build_javascript
  build_jekyll
end

task :watch do
    build_sass

    pids = [
        spawn("grunt watch"),
        spawn("compass watch"),
        spawn("jekyll server --watch")
    ]

    trap "INT" do
        Process.kill "INT", *pids
        exit 1
    end

    pids.each do |pid|
        Process.wait pid
    end
end

def build_sass
  system("compass compile")
end

def build_javascript
  system("grunt build")
end

def build_jekyll
  system("jekyll build")
end