Markdown + LiveReload on Grunt

Gruntfile.js

module.exports = function(grunt) {
    grunt.initConfig({
        markdown: {
            all: {
                files: [
                    {
                        expand: true,
                        src: ['**/*.md', '!node_modules/**/*.md'],
                        ext: '.html'
                    }
                ],
                options: {
                    postCompile: function(src, context) {
                        return src + "<script src='http://localhost:35729/livereload.js'></script>\n";
                    },
                }
            }
        },
        watch:{
            md: {
                files: '**/*.md',
                tasks: ['markdown'],
            },
            html: {
                files: '**/*.html',
                tasks: [],
                options: {
                    livereload: true
                }
            }
        }
    });

    grunt.loadNpmTasks('grunt-markdown');
    grunt.loadNpmTasks('grunt-contrib-watch');

    grunt.registerTask("default", ["markdown", "watch"]);
};