Update README.md

README.md

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 # fxserver-esx_addoninventory
 ESX AddonInventory
+
+[INSTALLATION]
+
+1) CD in your resources folder
+2) Clone the repository
+```
+git clone https://github.com/FXServer-ESX/fxserver-esx_addoninventory esx_addoninventory
+```
+3) Add this in your server.cfg :
+
+```
+start esx_addoninventory
+```
+
+[USAGE]
+
+There is two types of inventories : shared and not shared.
+
+- Shared inventories dont belong to a specific user. Example : foodstore items.
+- Not shared inventories are created for every user in the server. They are created in db when player is loaded, Example : property items money
+
+You must create the inventory in the database (addon_inventory) before using it :
+
+name = name of the inventory, label = label of the inventory, shared (0 or 1) = Is inventory shared
+
+```
+TriggerEvent('esx_addoninventory:getSharedInventory', 'main_grocery', function(inventory)
+  inventory.addItem('bread', 1)
+end)
+
+TriggerEvent('esx_addoninventory:getInventory', 'property', 'steam:0123456789', function(inventory)
+  inventory.removeItem('water', 1)
+end)
+```