Update README.md

README.md

-# Internal CA
+# Internal CA [(Download the MKP package)](/../../../-/raw/master/checkpoint_internal_ca.mkp "Download MKP package")
+
+**Note: this package is for CheckMK version 2.x. For other versions see the corresponding branch.**
 
 This version is used to discover the Check Point SNMP values
 
@@ -11,10 +13,10 @@ unknown OIDs:
 Check Info:
 
 * *service*: this check will create one service per Check Point internal CA
-* *state*: always **ok**
+* *state*: **critical** if *icaStatus* not OK.
 * *wato*: none
-* *perfdata*: none
+* *perfdata*: all cert counters
 
 Sample output
 
-![sample output](/doc/sample.png?raw=true "sample Internal CA long output")
\ No newline at end of file
+![sample output](/doc/sample.png?raw=true "sample Internal CA long output")