Update README.md

Author: pudo

README.md

@@ -1,42 +1,7 @@
 # pantomime
 
-[![build](https://github.com/alephdata/pantomime/actions/workflows/build.yml/badge.svg)](https://github.com/alephdata/pantomime/actions/workflows/build.yml)
-
-``pantomime`` is a small library that handles the parsing and normalisation
-of internet MIME types in Python. This can be useful to normalise invalid,
-or misformatted MIME types emitted by remote web servers.
-
-## Usage
-
-The simplest use is to normalise a MIME type:
-
-```python
-from pantomime import normalize_mimetype
-
-assert normalize_mimetype('TEXT/PLAIN') == 'text/plain'
-assert normalize_mimetype('plain/text') == 'text/plain'
-assert normalize_mimetype(None) == 'application/octet-stream'
-assert normalize_mimetype('') == 'application/octet-stream'
-```
-
-Internally, `pantomime` uses a `MIMEType` object to handle parsing. It can
-be used to access more specific information, like human readable labels:
-
-```python
-from pantomime import parse_mimetype
-
-parsed = parse_mimetype('text/plain')
-assert parsed.family == 'text'
-assert parsed.subtype == 'plain'
-assert parsed.label == 'Plain text'
-```
-
-## Open issues
-
-* Internationalisation, i.e. make the human-readable labels available in
-  multiple languages.
-* Expand replacements for specific MIME types.
+**NOTICE** The functionality contained in `pantomime` is now maintained as part of `rigour`, which combines data validation for several `followthemoney`-related data formats. See https://opensanctions.github.io/rigour/mime/ for details. 
 
 ## License
 
-Licensed under MIT terms, see the ``LICENSE`` file included in this repository.
+Licensed under MIT terms, see the ``LICENSE`` file included in this repository.