feat: SAML_DEFAULT_BINDING in README

Author: peppelinux

README.rst

@@ -128,6 +128,15 @@ may be specified by the client - typically with the ?next= parameter.)
 In the absence of a ?next= parameter, the LOGIN_REDIRECT_URL setting will be used (assuming the destination hostname
 either matches the output of get_host() or is included in the SAML_ALLOWED_HOSTS setting)
 
+Preferred sso binding
+---------------------
+Use the following setting to choose your preferred binding for SP initiated sso requests::
+
+  SAML_DEFAULT_BINDING
+
+For example::
+
+  SAML_DEFAULT_BINDING = saml2.BINDING_HTTP_POST
 
 Preferred Logout binding
 ------------------------

djangosaml2/views.py

@@ -287,7 +287,7 @@ def get(self, request, *args, **kwargs):
                     logger.error(f'TemplateDoesNotExist: {e}')
 
             if not http_response:
-                # use the html provided by pysaml2 if no template was specified or it didn't exist
+                # use the html provided by pysaml2 if no template was specified or it doesn't exist
                 try:
                     session_id, result = client.prepare_for_authenticate(
                         entityid=selected_idp, relay_state=next_path,