Added NimVek's findings about unknown commands
Added NimVek's findings about unknown commands

NimVek has run decode in the version of 2014-01-09 over lots of gme files and found some commands and conditions we do not understand currently. I put them in the document along with the number of findings for each code.
entropia/tip-toi-reveng,jovermann/tip-toi-reveng,christiannolte/tip-toi-reveng,colinba/tip-toi-reveng,entropia/tip-toi-reveng,colinba/tip-toi-reveng,christiannolte/tip-toi-reveng,christiannolte/tip-toi-reveng,entropia/tip-toi-reveng,colinba/tip-toi-reveng,jovermann/tip-toi-reveng,entropia/tip-toi-reveng,entropia/tip-toi-reveng,jovermann/tip-toi-reveng,colinba/tip-toi-reveng,jovermann/tip-toi-reveng,christiannolte/tip-toi-reveng,entropia/tip-toi-reveng