docs: Advertise ch.vorburger.fswatch (#346)

Author: vorburger

README.md

@@ -77,6 +77,8 @@ Similar Projects
 Related Projects
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+[ch.vorburger.fswatch](https://github.com/vorburger/ch.vorburger.fswatch) is another handy small library from the same author.
+
 For the _expect-like_ functionality, from https://en.wikipedia.org/wiki/Expect#Java, note (in no particular order):
 
 * https://github.com/vorburger/vexpect