47: updated comments in the grammar
47: updated comments in the grammar

Change-Id: I6915df25289ba643555112d075dccc9a615ea5fe
Task-Url: https://github.com/LorenzoBettini/javamm/issues/issue/47

LorenzoBettini/javamm,LorenzoBettini/javamm,LorenzoBettini/javamm