Update README.md

Author: glenngr

README.md

@@ -1,2 +1,27 @@
 # ZendeskStatisticsForPRTG
 PRTG EXE/Advanced sensor that gets ticket stats from Zendesk
+
+### Install instructions
+* Edit the .config files with correct subdomain, username and password for Zendesk
+* Copy compiled files to PRTG Network Monitor\Custom Sensors\EXEXML
+* Add a new EXE/Advanced sensor in PRTG.
+* Select GetZendeskAgentStatsInGroup or GetZendeskGroupStats in the dropdown
+* Use the group Zendesk Group ID as paramater for the exe file
+
+To get group ID, look in the Zendesk Web interface, OR run the exe files without parameter. It should then list the available groups.
+
+
+#### Description of sensors
+
+###### GetZendeskGroupStats
+Shows the following channels:
+* New tickets today
+* Solved tickets today
+* Number of on-hold tickets
+* Number of pending tickets
+* Number of open tickets
+* Number of unassigned tickets
+
+###### GetZendesAgentStatsInGroup
+Shows one channel for each agent in the group.
+The channel data will be number of open tickets for the agent.