Merge pull request #12 from isprambiente/master

Little correction in README

Thank you @MdreW !

README.md

@@ -99,7 +99,7 @@ source satosa.env/bin/activate
 
 ###### Dependencies
 ````
-sudo apt install -y libffi-dev libssl-dev xmlsec1 python3-pip xmlsec1 procps
+sudo apt install -y libffi-dev libssl-dev xmlsec1 python3-pip xmlsec1 procps libpcre3 libpcre3-dev
 
 git clone https://github.com/peppelinux/Satosa-Saml2Spid.git repository
 pip install -r repository/requirements.txt
@@ -148,6 +148,7 @@ If you want to handle metadata file manually, as this example purpose as demostr
 create `metadata/idp` and `metadata/sp` folders, then copy metadata:
 
 ````
+mkdir -p metadata/idp metadata/sp
 wget http://localhost:8080/metadata.xml -O metadata/idp/spid-saml-check.xml
 wget https://registry.spid.gov.it/metadata/idp/spid-entities-idps.xml -O metadata/idp/spid-entities-idps.xml
 ````