chore: update README.md and package documentation

Although more eyeballs always help, the library has now seen a decent amount of field testing and reviews.

README.md

@@ -1,22 +1,19 @@
-[![GoDoc](https://godoc.org/github.com/privacybydesign/gabi?status.svg)](https://godoc.org/github.com/privacybydesign/gabi)
+[![Go Reference](https://pkg.go.dev/badge/github.com/privacybydesign/gabi.svg)](https://pkg.go.dev/github.com/privacybydesign/gabi)
 Gabi
 ====
 
-Gabi is a Go implementation of the [IRMA](https://www.irmacard.org) approach to the [Idemix](http://www.research.ibm.com/labs/zurich/idemix/) attribute based credential system. Check out the [IRMA](https://privacybydesign.foundation/irma) website to learn more on this great alternative to traditional identity management. 
+`gabi` is a Go implementation of the [IRMA](https://irma.app) approach to the Idemix attribute based credential system. Check out the [Privacy by Design Foundation](https://privacybydesign.foundation/irma-en) website to learn more on this great alternative to traditional identity management. 
 
-gabi itself is designed to be compatible with the existing [Java](https://github.com/credentials/credentials_idemix) and [C++](https://github.com/credentials/silvia) implementations of the IRMA system.
+`gabi` is the authoritative IRMA Idemix implementation, but it is still largely compatible with the now deprecated [Java](https://github.com/privacybydesign/irma_api_common) implementation.
 
-Status
-------
-
-Do note that this library is still fairly young. As such there might be some API-changes in the near future. And although most (if not all) cryptographic primitives are present, it does need additional "field testing". In addition, since this library implements (non-trivial) cryptography it needs to be checked by many more eyeballs.
+gabi serves as the cryptographic core of [`irmago`](https://github.com/privacybydesign/irmago), which implements the IRMA server, IRMA app core, shared functionality between the two, and more. Most projects wanting to use IRMA or Idemix will want to use `irmago` instead of depending on `gabi` directly.
 
 Install
 -------
 
 To install:
 
-    go get -v github.com/privacybydesign/gabi
+    go get github.com/privacybydesign/gabi
 
 Test
 ----

doc.go

@@ -1,8 +1,8 @@
-// Copyright 2016 Maarten Everts. All rights reserved.
+// Copyright 2016 2020, Privacy by Design Foundation, Maarten Everts. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// Package gabi is an implementation of the IRMA (https://irmacard.org) approach
+// Package gabi is an implementation of the IRMA (https://irma.app) approach
 // to attribute based credentials. For now, see gabi_test.go on how to use the
 // library.
 package gabi