Add note on lack of async support to docs (#1829)

* Add note on lack of async support to Installation docs
* Add note on lack of async support to the Readme

#1828 (comment)

Author: salomvary

README.rst

@@ -47,6 +47,9 @@ contributed by the community.
 The current stable version of the Debug Toolbar is 4.1.0. It works on
 Django ≥ 3.2.4.
 
+The Debug Toolbar does not currently support `Django's asynchronous views
+<https://docs.djangoproject.com/en/dev/topics/async/>`_.
+
 Documentation, including installation and configuration instructions, is
 available at https://django-debug-toolbar.readthedocs.io/.
 

docs/installation.rst

@@ -7,6 +7,10 @@ Process
 Each of the following steps needs to be configured for the Debug Toolbar to be
 fully functional.
 
+.. warning::
+
+    The Debug Toolbar does not currently support `Django's asynchronous views <https://docs.djangoproject.com/en/dev/topics/async/>`_.
+
 1. Install the Package
 ^^^^^^^^^^^^^^^^^^^^^^