Update ModMobSupport.json

After looking through various mods, I have to say this covers most of them quite well, though I did find it weird that the mocreatures scorpions didn't have the climb ability added to them to go with how they climb things in mocreatures, so I fixed that. 
Hopefully I'll have a large update coming from different mods later on, but for now I hope this minor change is beneficial.
Merge pull request #356 from herosuperflash/patch-1

Update ModMobSupport.json