Requirejs failing.

Gruntfile.js

var crypto = require('crypto');
var fs = require('fs');

function createFileSha(filenane) {
    var sha = crypto.createHash('sha1');
    return sha.update(fs.readFileSync(filenane));
}

module.exports = function(grunt) {
    grunt.initConfig({
        meta: {
            version: '0.0.1'
        },

        jshint: {
            options: {
                "asi" : false,
                "bitwise" : true,
                "boss" : false,
                "curly" : true,
                "debug": false,
                "devel": false,
                "eqeqeq": true,
                "evil": false,
                "expr": true,
                "forin": false,
                "immed": true,
                "latedef" : false,
                "laxbreak": false,
                "multistr": true,
                "newcap": true,
                "noarg": true,
                "node" : true,
                "browser": true,
                "noempty": false,
                "nonew": true,
                "onevar": false,
                "plusplus": false,
                "regexp": false,
                "strict": false,
                "sub": false,
                "trailing" : true,
                "undef": true,
                globals: {
                    jQuery: true,
                    Backbone: true,
                    _: true,
                    $: true,
                    require: true,
                    define: true
                }
            },
            js: ['public/javascripts/**/*.js', 'source/**/*.js']
        },

        requirejs: {
            js: {
                options: {
                    baseUrl: "public/javascripts",
                    mainConfigFile: "public/javascripts/main.js",
                    name: 'main',
                    out: "public/assets/main.js"
                }
            },
            css: {
                options: {
                    baseUrl: 'public/css',
                    cssIn: "public/stylesheets/main.css",
                    out: "public/assets/main.css",
                    cssImportIgnore: null,
                    optimizeCss: 'default'
                }
            }
        },

        hashres: {
            options: {
                fileNameFormat: '${name}-${hash}.${ext}'
            },
            prod: {
                src: [
                    'public/assets/main.js',
                    'public/assets/main.css'
                ],
                dest: { src: 'tools/client/index.js', out: 'source/client/index.js' }
            }
        }

    });

    // Laoded tasks
    grunt.loadNpmTasks('grunt-contrib-jshint');
    grunt.loadNpmTasks('grunt-contrib-requirejs');
    grunt.loadNpmTasks('grunt-hashres');

    // Default task.
    grunt.registerTask('default', ['jshint', 'requirejs', 'hashres']);
};

HeaderView.js

define(function (require) {
	var Backbone = require('Backbone');

	var HeaderView = Backbone.View.extend({
		template: require('jade!./../templates/HeaderView'),

		render: function () {
			this.$el.html(this.template({title: 'TheMailer'}));
			return this;
		}
	});

	return HeaderView;
});

main.js

require.config({
    jade: {
        templateExtension: 'jade',
        disableI18n: true,
        disableHelpers: true
    },

    shim: {
        'jQuery': {
            exports: '$'
        },

        'Underscore': {
            exports: '_'
        },

        'Backbone': {
            deps: ['Underscore', 'jQuery'],
            exports: 'Backbone'
        },

        'Jade': {
            exports: 'Jade'
        },

        'ApplicationRouter': {
            deps: ['jQuery', 'Underscore', 'Backbone']
        }
    },

    paths: {
        jQuery: './../components/jquery/jquery',
        Underscore: './../components/underscore/underscore',
        Backbone: './../components/backbone/backbone',
        Jade:  './../components/require-jade/jade',
        Stylus:  './../components/require-stylus/require-stylus'
    }
});

require(['core/router', 'core/client', 'Backbone'], function (Router, client, Backbone) {
    var app = {
        root: '/'
    };

    window.Router = new Router();
    client.setup(window, app);

    Backbone.history.start({ pushState: true });
});