As melee you'll mostly want spellpower, spellcrit, and focus. Spellpower is 75% of your wisdom + 25% of your intelligence + whatever gear with spellpower you have on. Spellcrit comes from intelligence, as for focus you just need gear with focus on it. I personally didn't see any gear with focus until level 36, but I did few dungeons. Your spellpower translates into attack power, spell crit into physical crit, and focus into hit rating so there's no need for physical attributes. You'll probably find most of your damage as shaman/druid is spell burst damage from melee abilities that also do magic damage.