All of the JS for Jasmine is in the src directory. The specs for each file are in the specs directory. There are rake tasks to build the various files for distribution.
Github pages have to exist in a branch called gh-pages in order for their app to serve them. This repo adds that branch as a submodule under the `pages` directory. This is a bit of a hack, but it allows us to work with the pages and the source at the same time and with one set of rake tasks.
If you want to submit changes to this repo and aren't a Pivotal Labs employee, you can fork and work in the gh-pages branch. You won't be able to edit the pages in the submodule off of master.