- fixes default endpoint to beta

Author: baywet

src/main/java/com/microsoft/graph/requests/extensions/BaseGraphServiceClient.java

@@ -364,7 +364,7 @@ public class BaseGraphServiceClient extends BaseClient implements IBaseGraphServ
     /**
      * The default endpoint for the Microsoft Graph Service
      */
-    public static final String DEFAULT_GRAPH_ENDPOINT = "https://graph.microsoft.com/v1.0";
+    public static final String DEFAULT_GRAPH_ENDPOINT = "https://graph.microsoft.com/beta";
 
     /**
      * The current endpoint