Update README

Author: ThomasThelen

README.md

@@ -4,10 +4,27 @@ Grafana dashboard for GraphDB
 
 ## Background
 
-Ontotext provides a Grafana dashboard for Enterprise users, but doesn't provide a dashboard for the free version. This repository contains a dashboard that scrapes data from Prometheus, which is in turn scraping data from GraphDB's metrics endpoint (you need Prometheus for this).
+This repository contains a lightweight Grafana dashboard for GraphDB (Free) that scrapes data from Prometheus, which is in turn scraping data from GraphDB’s metrics endpoint (you need Prometheus for this).
 
 ## Dashboard
 
 The dashboard exposes *most* of the metrics that GraphDB provides. This is limited to system level metrics such as space constraints, memory, and heap usage.
 
+- graphdb_cache_hit
+- graphdb_cache_miss
+- graphdb_class_count
+- graphdb_heap_max_mem
+- graphdb_heap_used_mem
+- graphdb_nonheap_committed_mem
+- graphdb_heap_committed_mem
+- graphdb_nonheap_used_mem
+- graphdb_cpu_load
+- graphdb_open_file_descriptors
+- graphdb_logs_dir_free
+- graphdb_logs_dir_used
+- graphdb_data_dir_used
+- graphdb_data_dir_free
+- graphdb_work_dir_free
+- graphdb_work_dir_used
+
 ![Grafana Dashboard](./images/dashboard.png "Grafana Dashboard")