#414 Add comment for storage of private key

sdk.conf

@@ -4,7 +4,10 @@ sdk {
    # Credentials to authenticate via OAuth
   clientId: "781f6213-0f0f-4a79-9372-e7187ffda98b"
   clientSecret: "PnzR8Vbmhpv_VwTkT34wponqXWK8WBm-LADlryYdV4o"
-  privateKey: "123"
+  # Private key
+  # find location (or pw to keystore / ENV-var / Registry ?)
+  # and suitable format (PEM-Container ?)
+  privateKey: "$ref"
 
   # Proxy config for http api calls
   httpProxyHost: ""