Add documentation about how to handle SimpleSAMLphp specific issues
Add documentation about how to handle SimpleSAMLphp specific issues

shabda/djangosaml2,kviktor/djangosaml2-py3,shabda/djangosaml2,GradConnection/djangosaml2,City-of-Helsinki/djangosaml2,City-of-Helsinki/djangosaml2,GradConnection/djangosaml2,kviktor/djangosaml2-py3,WiserTogether/djangosaml2,WiserTogether/djangosaml2,advisory/djangosaml2_tenant,advisory/djangosaml2_tenant