The Emacs frontend to augment currently implements a very small set of commands. To activate this functionality, install it by copying the lib/frontends/augment.el file into your Emacs load path and adding (require 'augment) to your .emacs file. (Note that augment relies on json.el being installed. If you don't have this, you can get it from Edward O'Connor.) Once you've done this you'll be able to invoke M-x augment-mode.
In augment-mode, saving a file will result in selected backends being run on it and the results of those backends being displayed in the buffer. Currently only the test/unit backend will run. You also have access to the following key bindings:
Tests for augment.el may be found in spec/emacs-frontend-test.el. These require elunit to run.