docs: moves library documentation to Go package doc.

README.md

@@ -1,21 +1,3 @@
 # go-varsig
 
-`go-varsig` is an implementation of the `varsig` specification
+`go-varsig` implements v0.1.0 of the [`varsig` specification]
-
-## Algorithm naming
-
-While there is no strict need for compatibility with JWA/JWT/JWE/JWS, all
-attempts are made to keep the algorithm names here consisten with the
-table provided in section 3.1 of RFC7518 titled "JSON Web Algorithms.  In
-cases where there is no equivalent name for an algorithm, a best-effort
-attempt at creating a name in the spirit of that specification is made.
-
-It should also be noted that algorithm in this context might in fact be a
-pseudonym - for cryptographical signing algorithms that require the signed
-data to be hashed first, these names commonly refer to the combination of
-that signing algorithm and the hash algorithm.
-
-## References
-
-https://github.com/ChainAgnostic/varsig
-https://datatracker.ietf.org/doc/html/rfc7518#section-3.1

varsig.go

@@ -0,0 +1,20 @@
+// Package varsig implements v0.1.0 of the [Varsig specification].
+//
+// # Algorithm naming
+//
+// While there is no strict need for compatibility with JWA/JWT/JWE/JWS,
+// all attempts are made to keep the algorithm names here consisten with
+// the table provided in [section 3.1] of RFC7518 titled "JSON Web Algorithms.
+// In cases where there is no equivalent name for an algorithm, a best-
+// effort attempt at creating a name in the spirit of that specification is
+// made.
+//
+// It should also be noted that algorithm in this context might in fact be
+// a pseudonym - for cryptographical signing algorithms that require the
+// signed data to be hashed first, these names commonly refer to the
+// combination of that signing algorithm and the hash algorithm.
+//
+// [section 3.1]: https://datatracker.ietf.org/doc/html/rfc7518#section-3.1
+//
+// [Varsig Specification]: https://github.com/ChainAgnostic/varsig
+package varsig