updated gulpfile.js with additional 'test' task (incl. auto run in 'watch' task)
updated gulpfile.js with additional 'test' task (incl. auto run in 'watch' task)

mhoyer/todomvc-aurelia,mhoyer/todomvc-aurelia,behzad88/todomvc-aurelia,behzad88/todomvc-aurelia