Document further configuration of Uberspace

- setting up Basic Auth
- prettifying URL

examples/fcgi.py

@@ -12,10 +12,31 @@
 On the client side, specify the host as
     http://USER.STAR.uberspace.de/fcgi-bin/financeager.fcgi
 
+The uberspace domain is publicly accessible. For basic authentication, run
+    htpasswd -m -c /var/www/virtual/USER/.htuser USER
+
+and add a file ~/fcgi-bin/.htaccess with content
+    AuthType Basic
+    AuthName flask-financeager
+    AuthUserFile /var/www/virtual/USER/.htuser
+    Require valid-user
+
+On the client side, specify user and password in the config file as documented
+in the main README.
+
+You can prettify the URL format by adding a file ~/html/.htaccess with content
+    RewriteEngine On
+    RewriteRule ^financeager/(.*)$ /fcgi-bin/financeager.fcgi/$1 [QSA,L]
+
+Force a restart of the FCGI app by killing the existing one.
+This allows you to access via
+    http://USER.STAR.uberspace.de/financeager
+
 Further reading:
 https://blog.lucas-hild.de/flask-uberspace
 https://gist.github.com/tocsinDE/98c423da2724d23c02ff
 https://docs.python.org/3.4/howto/webservers.html
+https://wiki.uberspace.de/webserver:htaccess#verzeichnisschutz
 """
 import os