Update README.md

README.md

-# Cisco NTP [(Download the MKP package)](/../../../-/raw/master/{REPLACE_WITH_PACKAGE_NAME}.mkp "Download MKP package")
+# STP topology change [(Download the MKP package)](/../../../-/raw/master/stp_topo_change.mkp "Download MKP package")
+
+Monitors status of STP topology change
+
+This is a rewrite for CMK 2.0 based on the check "Cisco Spanning-Tree Topology Change" (cisco_stptopo) by Udo Woehler (check-mk at bsw-com.de).
 
-Monitors status of C{REPLACE_WITH_PACKAGE_TITLE}
 ---
 Check Info:
 
-* *service*: creates the service **_NTP status_** and one service **_NTP {item}_** for each NTP association, with the association name/ip-address as item
+* *service*: creates the service **STP topology change**
 ---
 * *state*: \
-    **warning**: 
-    * if NTP refID is in AUTH, AUTO, CRYPT, DENY, INIT, LOCL, RATE, STEP, TIME or XFAC (see WATO)
-    * if Error counter > 0 (see WATO)
-
     **critical**/**warning**: 
-    * if offset or stratum outside the configured levels (see WATO)\
+    * if there are tree or more STP topology changes in the configured interval (see WATO)\
 ---
-* *wato*: [(see WATO options)](/../../../-/raw/master/doc/wato.png "see sample screenshot")
+* *wato*: [(see WATO options)](doc/wato.png "see sample screenshot")
 ---
 * *perfdata (if avilable)*: 
-    * Offset (s)
-    * Delay (s)
-    * Jitter (s)
-    * Protocol errors (/s)
-    * Version errors (/s)
+    * STP topology change (s)
+    * STP topology changes (count)
 ---
 #### Want to contribute?
 Nice ;-) Have a look at the [contribution guidelines](CONTRIBUTING.md "Contributing")
 ---
 Sample output
 
-![sample output](/doc/sample.png?raw=true "sample output")
+![sample output](doc/sample.png?raw=true "sample output")
 
 WATO
 
-![WATO options](/doc/wato.png?raw=true "WATO options")
+![WATO options](doc/wato.png?raw=true "WATO options")