Update configuration.md

Author: bhillkeyfactor

docsource/configuration.md

@@ -1,6 +1,19 @@
 ## Overview
 
-TODO Overview is a required section
+The Idnomic PKI Gateway plugin extends the capabilities of Idnomic PKI (formerly OpenTrust PKI) to Keyfactor Command via the Keyfactor AnyCA Gateway. This plugin leverages the Idnomic SOAP-based connectors to provide comprehensive certificate lifecycle management. The plugin represents a fully featured AnyCA Plugin with the following capabilities:
+
+* **CA Sync**:
+    * Download all certificates issued by the Idnomic CA
+    * Support for incremental and full synchronization
+    * Filter certificates by issuance date
+* **Certificate Enrollment**:
+    * Support certificate enrollment with new key pairs
+    * Dynamic template (profile) discovery from the CA
+    * Zone-based certificate issuance
+    * Support for PKCS#10 CSR format
+* **Certificate Revocation**:
+    * Request revocation of previously issued certificates
+    * Support for standard CRL revocation reasons
 
 ## Requirements