Custom Item vending makes the vending machine become a fridge too so food doesn't spoil. i would love to not need power for the vending machine. 

here is the link for custom item vending: Custom Item Vending - Plugins - Codefling

I'll look into this, but to clarify, Rust is what made vending machines into fridges (in the Jungle update), not that plugin.

Merged post

I just checked and this plugin already supports vending machines. You just need to go into the config file and add at least 5 power to the vendingmachine.deployed entity (this entity should have been added automatically).