Added Persona example

examples/persona/templates/index.html

@@ -0,0 +1,23 @@
+{% extends "layout.html" %}
+{% block title %}Welcome{% endblock %}
+{% block body %}
+  <h2>Welcome</h2>
+  <p>
+    This is a small example application that shows how to integrate
+    Mozilla's persona signin service into a Flask application.
+  <p>
+    The advantage of persona over your own login system is that the
+    password is managed outside of your application and you get
+    a verified mail address as primary identifier for your user.
+  <p>
+    In this example nothing is actually stored on the server, it
+    just takes over the email address from the persona verifier
+    and stores it in a session.
+  {% if g.user %}
+  <p>
+    You are now logged in as <strong>{{ g.user }}</strong>
+  {% else %}
+  <p>
+    To sign in click the sign in button above.
+  {% endif %}
+{% endblock %}