Examples use httpx instead of aiohttp

README.md

@@ -33,7 +33,7 @@ or
 pip install async-tkinter-loop[examples]
 ```
 
-- `[examples]` part is needed to install optional dependencies (such as `aiohttp` and `pillow`) to run some of the
+- `[examples]` part is needed to install optional dependencies (such as `httpx` and `pillow`) to run some of the
   examples. If you're not going to run examples, remove the `[examples]` part from the command
 - Use `pip3` instead of `pip` on Linux systems to install the package for python3 (not python2)
 - Probably you'll want to create a virtual environment for experiments with this library, but this is optional.