Use a general API terms of use section in Readme.md

The specific ToS message can be configured here:

https://github.com/KorAP/Kustvakt/blob/33e21b878bdc73cafba9b813d32cccf603ff1ebc/lite/src/main/resources/kustvakt-lite.conf#L16

or here:

https://github.com/KorAP/Kustvakt/blob/33e21b878bdc73cafba9b813d32cccf603ff1ebc/full/src/main/resources/kustvakt.conf#L15

Change-Id: Ifdf3001a59c2c805526969d578dcbeabd3cc77e7
diff --git a/Readme.md b/Readme.md
index 4c3a15a..a3519fe 100644
--- a/Readme.md
+++ b/Readme.md
@@ -88,6 +88,7 @@
 More elaborate R scripts demonstrating the use of the package can be found in the [demo](demo) folder.
 
 ## Development and License
+### RKorAPClient
 
 **Authors**: [Marc Kupietz](http://www1.ids-mannheim.de/zfo/personal/kupietz/), [Nils Diewald](http://www1.ids-mannheim.de/zfo/personal/diewald/)
 
@@ -107,8 +108,8 @@
 
 [Highcharts](http://highcharts.com) is a Highsoft product which is not free for commercial and governmental use.
 
-#### German Reference Corpus DeReKo
-By using RKorAPClient to access the German Reference Corpus DeReKo, you agree that you are using it exclusively for non-commercial and academic purposes.
+### Accessed API Services
+By using RKorAPClient you agree to the respective terms of use of the accessed KorAP API services which will be printed upon opening a connection (`new("KorAPConnection", ...`).
 
 ## Contributions