Update readme.md

readme.md

-### 
+### Prerequisites ###
+Check that SWI-Prolog has version `8.2.2` or higher.
+
+### Starting
+
+You can start the server using `run.pl`, starting a listener on port `4444` with a thread pool of 5 workers.
+
+### Overview
+
+The basic idea is to encapsulate the core logic into a web-based API that receives and responds JSON objects:
+
+```mermaid
+sequenceDiagram
+    participant Client
+    
+    participant API
+    Client->>API: HTTP Request
+    API-->>Theory: Query
+    loop Rules & Learning
+        Theory-->>Theory: Irrelevancy / Explanation
+    end
+    Note right of Theory: Ipsum
+    Theory-->>API: Query Results
+    API->>Client: HTTP Response
+```
+
+### Documentation ###
+
+Ongoing. Please check the [Wiki](https://gitlab.rz.uni-bamberg.de/cogsys/dare2del/demonstrator/-/wikis/home) in the meantime.
+
+Details that might change:
+
+* Minor details in the JSON schemata
+* HTTP status codes 
+* Error and Exception Handling
 
-- [Starting the server](doc/startup-running.md)
-- [Requests](doc/requests.md)
-- [Schema](doc/schema.md)
 
----
 
-- Version 0.1
\ No newline at end of file