Updated README

README

@@ -1,4 +1,14 @@
-spicy-protobuf
-=================================
+# spicy-protobuf
 
-TODO: tell people what your package does!
+This repository contains a Spicy-based analyzer for Google Protocol Buffers.
+
+## References & Further Reading
+
+* [Spicy](https://github.com/zeek/spicy)
+  * [Docs](https://docs.zeek.org/projects/spicy/en/latest/programming/index.html)
+* [Zeek](https://github.com/zeek/zeek)
+  * [Docs](https://docs.zeek.org/en/master/)
+  * [Home Page](https://zeek.org/)
+* [Protobuf Encoding](https://protobuf.dev/programming-guides/encoding/)
+  * [Protoscope](https://github.com/protocolbuffers/protoscope)
+  * [Cheat Sheet](https://protobuf.dev/programming-guides/encoding/#cheat-sheet)