Do not parse the name if it was already parsed.

This method is called from within Ember occaisionally with the already
parsedName. This commit just makes that a noop (previously it would
throw').

Signed-off-by: Robert Jackson <robert.w.jackson@me.com>
Merge pull request #48 from rjackson/do-not-parse-already-parsed-names

Do not parse the name if it was already parsed.