showcasing my karma-jspm conf

karma.conf.js

module.exports = function(config) {
	var browser = 'PhantomJS';

	if (process.env.NODE_ENV === 'development') {
		browser = 'Chrome'; //chrome is much better, because it shows properly line numbers
	}

	config.set({
		// base path, that will be used to resolve files and exclude
		basePath: '../',

		// testing framework to use (jasmine/mocha/qunit/...)
		frameworks: ['jspm', 'mocha', 'chai'],

		// list of files / patterns to load in the browser
		files: [],
		jspm: {
			useBundles: true,
			loadFiles: [
				'public/jspm_packages/github/angular/bower-angular-mocks@1.3.11/angular-mocks.js',
				'test/unit/**/*.js'
			],
			serveFiles: ['public/**']
		},
		// list of files / patterns to exclude
		exclude: [],
		proxies: {
			'/base/': 'http://localhost:8283/'
		},
		// web server port
		port: 8067,

		// level of logging
		// possible values: LOG_DISABLE || LOG_ERROR || LOG_WARN || LOG_INFO || LOG_DEBUG
		logLevel: config.LOG_INFO,

		preprocessors: {},
		// Start these browsers, currently available:
		// - Chrome
		// - ChromeCanary
		// - Firefox
		// - Opera
		// - Safari (only Mac)
		// - PhantomJS
		// - IE (only Windows)
		browsers: [browser]	//use Chrome for development
		//    browsers: ['Chrome','Safari','Firefox','Opera','ChromeCanary'],

	});
};

Do you know if the exclude array will work in this case? I'm following a similar example but I can't get a file added there to be dropped from the served list.