Refactored policy system, fixed config file parsing inconsistencies.

- LocationPolicy is now an extension of Policy
- Policy.parse() is now PolicyParser mapped in PolicyParsers.
- NodeValueParser was merged with DataShifter
- More code small changes to enable the project to work with this new configuration.

README.md

@@ -1,4 +1,34 @@
 # Eye of Nemesis
-Eye of Nemesis is a Minecraft Paper plugin that allows server admins to write *policies* that will deny or allow (black/whitelist) players to do specific things.
+Eye of Nemesis is a plugin that allows server admins to write [policies](#Policies) that will deny or allow (black/whitelist) players to do specific things based on the value of [nodes](#Nodes).
 
-You can create policies based on player location, ~but other types of policies are available, like permission and player-name policy.~ (WIP)
+## Warnings
+- Even though running `/eye` will tell you to run `/eye help` to list all available commands, this is not implemented yet, however all commands are available as tab-complete of `/eye`.
+- This plugin is in a very early stage.
+
+## Policies
+Policy is a structure that holds nodes and tell them _where_ to act. For example, a Location policy will tell its child nodes that they work from coordinates `x1 y1 z1` to `x2 y2 z2`.
+
+Currently, the only policy type is Location.
+
+## Nodes
+Nodes are specific rules that rely on it's value to know _when_ to act. For example, a useItem policy with value `cookie` will prevent users from doing anything with a cookie.
+
+### `useItem`
+**Triggered:** breaking/placing/interacting with anything using this item.
+
+**Expects:** list of strings.
+
+### `useEnchantment`
+**Triggered:** breaking/placing/interacting with anything using an item with the specified enchantment, **will allow items without enchantment even on allowlist mode**.
+
+**Expects:** map of _string: string_.
+
+### `attackWith`
+**Triggered:** attacking with this item in hand.
+
+**Expects:** list of strings.
+
+## Performance
+This plugin is not scalable as it is and will run unoptimized checks when your players do certain things in the server if you have policies enabled, I made it for a server with a few friends.
+
+For every policy there's a check, for every matching policy there are its child nodes, each one introducing new checks. Keep that in mind.