Update 'Creating a custom gate layout'

Creating-a-custom-gate-layout.md

@@ -101,4 +101,18 @@ normal buttons cannot be used since they'd fall off. Using wall coral fans work
 
 Using `AIR` for a closed underwater gate looks weird, so `WATER` might be better. If using `AIR` for the closed gate,
 you need to make sure it actually contains air when creating it. For partially submerged portals, like ones used for
-boat teleportation, you need to keep water away from the portal entrance/opening until it's been created.
+boat teleportation, you need to keep water away from the portal entrance/opening until it's been created.
+
+## Economy Support:
+
+The latest version of Stargate has support for Vault. Gate creation, destruction and use can all have different costs
+associated with them. You can also define per-gate layout costs. The default cost is assigned in the config.yml file,
+while the per-gate costs re defined in the .gate files. To define a certain cost to a gate just add these lines to your
+.gate file:
+
+```
+  createCost: 5 -- Will cost 5 currency to create
+  destroyCost: 5 -- Will clost 5 currency to destroy (negative to get back the spent money)
+  useCost: 5 -- Will cost 5 currency to use the stargate
+  toOwner: true -- Will send any fees to the gate's owner
+```