Update index.html

Add checkbox for auto scroll
Update main.js

Allow autoscroll checkbox to work
Update main.js

Clientsided greentexting.
Merge branch 'master' of git://github.com/BagelMan666/live4chan into BagelMan666-master

Conflicts:
	public/main.js
Merge branch 'master' of github.com:emgram769/live4chan