App.yaml designed for serving a static site on Google App Engine (Python). Copy your static html and files into a folder called "static" next to app.yaml. Contains a bunch of mimetype declarations from html5boilerplate's .htaccess. May not be necessary for most situations.
my_site app.yaml static index.html ...
The static folder is invisible when serving (i.e. my_site/static/index.html is accessed as http://your-app-name-here.appspot.com/index.html.
Remember: No spaces in file or path names. Case sensitive.