Enable example project to be served directly from the examples directory itself.

Created sym-links from backbone.geppetto and its dependencies in to new directory examples/js/lib, and updated the example project's requirejs config to point to them via that location rather than via the repository's root (which is outside the example's web-root when served directly from examples/). 

This seemed to be the simplest way to enable delivery when not served from the example's parent directory -- which might not be the obvious approach for anyone who doesn't do an npm install in order to run the test suites locally first... Adding a pair of sym-links felt less complex than trying to explain that the demo had to be served from the parent directory, since running a webserver there gives you an index page which leads to examples and text on the modeln github subdomain rather than pointing to the local option...