Update install info and requirements

Author: brunato

README.md

@@ -55,18 +55,9 @@ cd example/
 virtualenv -ppython3 env
 source env/bin/activate
 
-pip install --no-deps djangosaml2-spid
 pip install djangosaml2-spid
 ````
 
-⚠️ Why `pip install` have beed executed twice? spid-django needs a fork of PySAML2 that's not distribuited though pypi.
-This way to install it prevents the following error:
-
-````
-ERROR: Packages installed from PyPI cannot depend on packages which are not also hosted on PyPI.
-djangosaml2-spid depends on pysaml2@ git+https://github.com/peppelinux/[email protected]#pysaml2
-````
-
 Your example saml2 configuration is in `spid_config/spid_settings.py`.
 See djangosaml2 and pysaml2 official docs for clarifications.
 

requirements.txt

@@ -1,7 +1,6 @@
 django>=2.2.24,<4.0
 
 # hint before: pip install -U setuptools
-# pysaml2 @ git+https://github.com/peppelinux/[email protected]#pysaml2
 cffi
 
 # django saml2 SP