refactor: remove outdated keys.txt and improve README.md and XML configuration samples for clarity (#2390)

Author: predic8

distribution/conf/keys.txt

@@ -2,9 +2,10 @@
 
 This folder contains the Membrane configuration. More configuration samples could be found in the [tutorial](../tutorials) and [examples](../examples) folders.
 
+
 ## Starting Membrane    
 
-Run Membrane with the configuration from this folder:
+Run Membrane with the configuration in this folder:
 
 ```
 cd membrane-api-gateway-<VERSION>
@@ -14,15 +15,21 @@ cd membrane-api-gateway-<VERSION>
 
 ## YAML Configuration
 
-Use the 'apis.yaml' file to configure your APIs. You can remove the inactive XML file.
+Use the 'apis.yaml' file to configure your APIs. The 'apis.yaml' has precedence over the 'proxies.xml' file.
+
+You can remove the inactive XML file in case you do not want to use the YAML configuration.
 
+```
 rm proxies.xml.inactive
+```
 
 
 ## XML  Configuration
 
-To switch back to XML:
+To switch back to the XML configuration:
 
+```
 rm apis.yaml
 mv proxies.xml.inactive proxies.xml
+```
 

distribution/router/conf/README.md

@@ -1,16 +1,10 @@
 <!--
-	 *** Membrane Configuration ***
+	 *** XML Configuration Sample ***
 
-	 Try the new experimental YAML configuration in apis.yaml!
+     How to use the XML configuration:
 
-	 Stay with the XML in case you have complicated setups with beans till YAML supports all the functions of Membrane.
-
-	 For more see:
-	 - The examples/* folders with working samples
-	 - Configuration Reference: https://www.membrane-api.io/docs/
-
-     Use an XML editor with XML Schema syntax completion for easy editing like
-	 Visual Studio Code or Intellij.
+     1.) Rename this file to proxies.xml
+     2.) Delete the apis.yaml file
 
 -->
 <spring:beans xmlns="http://membrane-soa.org/proxies/1/"