Added roles

examples/roles/demo_app/files/demo/app/demo.wsgi

@@ -0,0 +1,10 @@
+activate_this = '/var/www/demo/.venv/bin/activate_this.py'
+exec(open(activate_this).read(), {'__file__': activate_this})
+
+import os
+os.environ['DATABASE_URI'] = 'mysql://demo:demo@db01/demo'
+
+import sys
+sys.path.insert(0, '/var/www/demo')
+
+from demo import app as application