README: Remove warning about mldsa-native not being ready for production

With CBMC proofs, ACVP testing, and CT hardning+testing in place, we can
remove the warning about mldsa-native not being ready for production.

Signed-off-by: Matthias J. Kannwischer <matthias@kannwischer.eu>

Author: mkannwischer

README.md

@@ -14,9 +14,9 @@ The goal of mldsa-native is to be a secure, fast and portable C90 implementation
 
 ## Status
 
-mldsa-native is work in progress. **WE DO NOT CURRENTLY RECOMMEND RELYING ON THIS LIBRARY IN A
-PRODUCTION ENVIRONMENT OR TO PROTECT ANY SENSITIVE DATA.** Once we have the first stable version,
-this notice will be removed.
+mldsa-native is in alpha-release stage. We believe it is ready for use, and hope to spark experiments on integration into other software before issuing a stable release. If you have any feedback, please reach out!
+
+mldsa-native is intended to be used as a code package, where source files are imported into a consuming project's source tree and built using that project's build system. The build system provided in this repository is for experimental and development purposes only. 
 
 ## Quickstart for Ubuntu