Grunt twig support

In Gruntfile.js

browserSync: {
            dev: {
                bsFiles: {
                    src : [
                        'css/*.css',
                        'templates/*.php',
                        'images/optimized/*.{png,jpg,gif}',
                        'js/build/*.js'
                    ]
                },

needs to be:

browserSync: {
            dev: {
                bsFiles: {
                    src : [
                        'css/*.css',
                        'templates/*.twig',
                        'images/optimized/*.{png,jpg,gif}',
                        'js/build/*.js'
                    ]
                },

only *.php changes to *.twig.