Removed client authentication from the client deregistration &
client-secret reset APIs.

Change-Id: I9af0c65b5a7e34af761db6d519ea72a2c6d9c46e
diff --git a/core/Changes b/core/Changes
index a315367..bec0bd2 100644
--- a/core/Changes
+++ b/core/Changes
@@ -1,6 +1,8 @@
 # version 0.62.4
 24/01/2020
    - Removed salt from config and updated config files.
+05/02/2020
+   - Added welcome page.   
 
 # version 0.62.3
 03/12/2019
diff --git a/core/src/main/java/de/ids_mannheim/korap/web/controller/SearchController.java b/core/src/main/java/de/ids_mannheim/korap/web/controller/SearchController.java
index d3b88a8..5bbcfeb 100644
--- a/core/src/main/java/de/ids_mannheim/korap/web/controller/SearchController.java
+++ b/core/src/main/java/de/ids_mannheim/korap/web/controller/SearchController.java
@@ -65,6 +65,13 @@
     @Autowired
     private OAuth2ScopeService scopeService;
     
+    
+    @GET
+    @Path("{version}")
+    public Response index (){
+        return Response.ok("Welcome to KorAP API!").build();
+    }
+    
     @POST
     @Path("{version}/index/close")
     public Response closeIndexReader (@FormParam("token") String token){