README: Adding paragraph about howto do l10n work

README.md

@@ -63,3 +63,32 @@ Unusual things in the design:
 * `backend.mixins.VisitorMixin` is the root of a class hierarchy of mixins used
   by most views in the site; those mixins implement the basis of resource
   instantiation and permission checking.
+
+## WebUI Translation
+The NM Front Desk web application is supporting localization's due the
+possibility of build in l10n support. Currently there are the languages German,
+French, Spanish and Italian prepared. You might want to help out to improve the
+existing l10n strings or add more languages. To do this you will need the
+following steps.
+
+Updating the current strings of the language you want to work on. E.g. for
+German. (Note: If you don't use a single language as specification all
+languages will be updated.)
+
+    ./manage.py makemessages -l de
+
+Next simply use the preferred tool for working on the .po file which can be
+found in the folder `locale/$(LANG)/LC_MESSAGES/django.po`.
+
+To test your work you need to create the compiled catalog of the l10n strings.
+
+    ./manage.py compilemessages
+
+Next run the local Django webserver.
+
+    ./manage.py runserver
+
+Control your work with the preferred browser by calling the URI
+'localhost:8000'. Note, you need to call `./manage.py compilemessages` again
+once you have modified the *.po file in order to improve the preferred
+translation.