You can use paster create --list-templates to get a list of all available application templates.
(venv) $ paster create -t mapfish_client HelloWorld
You can safely answer y when you asked whether the favicon.ico and index.html files can be overwritten. It means those two files will be replaced by those in the mapfish_client template, which is what we want.
Let’s now look at what the paster create -t mapfish_client command does. In addition to replacing the favicon.ico and index.html file the command creates three new directories in the application’s public directory.
Look also at the various API docs.