Fix universal selector in descendant selector

[Shraymonks]

Fix parsing of descendant selector when the right selector is the universal selector.

[Shraymonks]

@maxbrunsfeld Can this get looked at?

[amaanq]

@Shraymonks what about this?

example|* {
  color: blue;
}

Found it here https://developer.mozilla.org/en-US/docs/Web/CSS/Universal_selectors

[Shraymonks]

That would be a separate issue; see #33.

[amaanq]

Thanks for the ref link, not too familiar with css