This extension adds the ability to center and right-align text and some content.
Note: Due to github reportedly not supporting any kind of markdown that does this, I can't show you what happens. You'll just have to take my word for it.
To center-align something, place a dash followed by a right-facing angle bracket, '->', before your text.
Then place a left-facing angle bracket followed by another dash, '<-', to close the center-aligned block.
-> this is some center-aligned text <-
To right-align something, place a dash followed by a right-facing angle bracket, '->', before and after your text.
-> this is some right-aligned text ->