How to link Vault to essentials eco

I made a bukkit server before some time but I left it. Now I am planning to make one again and I want to ask how to configure Vault with:
Essentials economy; Minigames; Killreward; and possibly basics to link to others
There is NOTHING on google about that so I just want an answer of an old question:
How do I link Vault?

 

You dont need to do anything special vault is just a library you have to have minigames plugins that supports vault

 

I am almost completely noob to this. So I just put all the vault files in the plugin folder and I am ready?

 

Yes you put the vault.jar into your plugins directory and all you need is minigame plugin that supports vault

 

So no writing, no coding, just that. Nice XD

 

Yes exactly, Vault is a library for plugin developers that is needed for plugins that are using vault