Update README with additional documentations and details

README.md

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 # NPTicket
 An open-source C# library for reading/verifying PSN authentication tickets.
+
+This library is mostly based off of Project Lighthouse's implementation.
+We've taken some creative liberties and shipped it as a package for use by other PS3 custom server developers.
+
+## Projects using this package
+Here's a list of projects using NPTicket for reference.
+You can also look at the `NPTicket.Test` project in this repository for a basic overview.
+
+- [Refresh](https://github.com/LittleBigRefresh/Refresh)
+- [SoundShapesServer](https://github.com/turecross321/SoundShapesServer)
+- [PLGarage](https://github.com/jackcaver/PLGarage)
+
+## Useful Documentation and Repositories
+
+- [PSDevWiki/X-I-5-Ticket](https://psdevwiki.com/ps3/X-I-5-Ticket):
+    General overview of how tickets function, as well as examples
+
+- [ProjectLighthouse's Documentation](https://github.com/LBPUnion/ProjectLighthouse/blob/main/Documentation/Tickets.md):
+    Documents NPTicket's encryption.
+
+- [Skateboard3Server's Documentation](https://github.com/hallofmeat/Skateboard3Server/blob/master/docs/PS3Ticket.md):
+    Documents format in more in-depth detail.
+
+- [PubKeyFinder](https://github.com/Slendy/PubKeyFinder):
+    Small C# program that implements the ECDSA public key recovery algorithm.