Remove address wildcards from "Features" list in README

[Cazfri]

If I'm understanding correctly from #10 and the following code:

go-osc/osc/osc.go

Lines 124 to 128 in 85fee7f

	for _, chr := range "*?,[]{}# " {
	if strings.Contains(addr, fmt.Sprintf("%c", chr)) {
	return errors.New("OSC Address string may not contain any characters in \"*?,[]{}#")
	}
	}

wildcards in addresses are not supported.

If the wildcard addressing feature is not implemented, it should not be listed under "Features". It could be listed under a "Feature TODO" section, or discussed in a separate issue, but listing it under "Features" is misleading. Please remove until the feature is implemented. If marked as a "TODO" or "Help requested", enterprising Go devs can more easily recognize potential contributions.

If I'm mistaken and this feature is currently implemented, an example on the README would be helpful.