Gruntfile: Relative sourcemap paths with grunt-browserify and mold-source-map

Gruntfile.js

module.exports = function(grunt) {

    // load only required grunt tasks as tasks are run
    require('jit-grunt')(grunt);

    // Project configuration.
    grunt.initConfig({
        browserify : {
            files : {
                'test/browserified_unit_tests.js' : 'test/spec/**.js'
            },
            options : {
                bundleOptions : {
                    // Embed source map for tests
                    debug : true
                },
                // Convert absolute sourcemap filepaths to relative ones using mold-source-map.
                postBundleCB: function(err, src, cb) {
                    var through = require('through');
                    var stream = through().pause().queue(src).end();
                    var buffer = '';
                    stream.pipe(require('mold-source-map').transformSourcesRelativeTo(__dirname)).pipe(through(function(chunk) {
                        buffer += chunk.toString();
                    }, function() {
                        cb(err, buffer);
                    }));
                    stream.resume();
                }
            }
        }
    });
};

bundleOptions is no longer used. Move all option in browserifyOptions.