Appear Offline Mode

im a huge introvert and ill admit it sometimes i just dont want to talk to anyone and if i have to im usually a dick and an ass and it would just be easier if i can enter games by myself without my friends knowing and sending messages in my chat like how close are you to being done or get on skype or just a bunch of other messages i know there's an away button but that doesn't show when your in game and i would love it if riot just made a button that made it look like im offline