Updates README.md

README.md

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-# Events Gallery
+# Project Pokémon Events Gallery
+
+### What is this?
+The collective effort of the Project Pokémon (and other) communities to preserve as much event Pokémon information as possible.
+
+### How do I use this?
+#### • Legality with [PKHex](https://projectpokemon.org/home/files/file/1-pkhex/)
+1. Download this repository.
+1. Extract the contents to a folder `mgdb` in the same folder as `PKHex.exe`.
+
+#### • Injection with PKHex
+1. Find the specific wondercard or Pokémon file.
+1. Drag/drop the file onto PKHex in the spot where you want that Pokémon.
+
+### I don't see _X_ event. Can I contribute it?
+Sure, there are several ways.
+1. Create a pull request!
+1. Make a contribution post [here](https://projectpokemon.org/home/forums/forum/64-event-contributions/).
+
+### It looks like some Gen 4 events are hacks, what's up with that?
+Unfortunately some of the Gen 4 wondercards are missing but we have the mystery gifts (PGT).
+To keep everything consistent, the PGTs were converted to wondercards with placeholder data.
+There is a list of missing wondercards [here](https://rebrand.ly/missib7ab).
+Do you have one of these events? Please contribute it!
+
+### Where are the Gen 4 PCD files?
+To keep the format consistent, all PCDs were converted to WC4 format.
+The data is the same except the Pokémon template itself is decoded, just like PK4 files.
+
+### Where are your individual Pokémon files for Gen 4+?
+Posting the individual Pokémon not only contributes to cloning, but does not help our legality research efforts. 
+The exception are GTS traded Pokémon from Daisuki, of which many are missing or incorrect in the gallery.