updated readme for reaxtivex extension

gabis@precog.co · gabis@precog.co · commit 3790dfb77de8 · 2022-10-14T09:38:45.000+03:00
diff --git a/README.md b/README.md
@@ -12,15 +12,16 @@ pip install rsocket
 
 or install any of the extras:
 
-* rx
+* rx (RxPy3)
+* reactivex (RxPy4)
 * aiohttp
 * quart
 * uic
 
 Example:
 
 ```shell
-pip install --pre rsocket[rx]
+pip install --pre rsocket[reactivex]
 ```
 
 Alternatively, download the source code, build a package:
