added README

README.md

+# Shibboleth SP Configuration
+
+This puppet module creates a very simple Shibboleth configuration
+for Stanford SPs.  To configure a node to authenticate against
+Stanford's production IdP, and using the default webmaster@fqdn
+contact email, use this:
+
+    node webapp {
+      class { 'shibboleth_sp': }
+    }
+
+To customize the supportContact email address, use the contact
+parameter:
+
+    node webapp {
+      class { 'shibboleth_sp':
+        contact => 'admin@webapp.stanford.edu',
+      }
+    }
+
+You can also choose a different IdP - set the IdP parameter to 'dev'
+for idp-dev.stanford.edu, or 'itlab' for idp.itlab.stanford.edu:
+
+    node default {
+      class { 'shibboleth_sp':
+        idp     => 'itlab',
+        contact => 'admin@itlab.stanford.edu',
+      }
+    }
+
+
+