adds link to sister-module

README.md

@@ -7,6 +7,10 @@ SINQ.
 This supports the older 4 and 8 channel EL737 models and the new 10CH 2nd
 generation systems.
 
+**Note:** the epics side of this interface is also implemented/shared by the
+[StreamGenerator](https://gitea.psi.ch/lin-epics-modules/StreamGenerator)
+module.
+
 ## How to Use
 
 Unless a custom database is needed, a device can be configure simply by setting