Gulp: ignore error (http://stackoverflow.com/questions/21602332/catching-gulp-mocha-errors#answers)
function handleError(err) {
console.log(err.toString());
this.emit('end');
}
gulp.task("test", function() {
return gulp.src(paths.tests)
.pipe(mocha({ reporter: "spec" })
.on("error", handleError));
});