link to the other exporter

Author: alicebob

README.md

@@ -1,4 +1,11 @@
-Aerospike Prometheus exporter
+# Project status
+
+Since 2020 (Aerospike ~5.0?) the Aerospike team have their own Prometheus exporter. It's likely a better choice if you run a current version of Aerospike, especially if you run the Enterprise Edition. The exporter here might be a better choice is you run an older version. PRs are still welcome, but don't expect active maintenance to stay up to date with the current Aerospike.
+
+https://github.com/aerospike/aerospike-prometheus-exporter
+
+
+# Aerospike Prometheus exporter
 
 This follows the logic from [asgraphite](https://github.com/aerospike/aerospike-graphite). Run a `asprom` collector against every node in the aerospike cluster.