Multiple profiler modes

[cristaloleg]

This should work as expected: enable 2 profilers at once

func ExampleMultipleModes() {
	modes := []string{easypprof.HeapMode, easypprof.MutexMode}

	cfg := easypprof.Config{
		Mode: strings.Join(modes, ","),
	}
	defer easypprof.Start(cfg).Stop()

	// Output:
}