You can deploy to github pages with a couple minor changes to Share With Me:
// app.baseUrl = '/polymer-starter-kit/';
in app.js near the top // Sets app default base URL
app.baseUrl = '/';
if (window.location.port === '') { // if production
// Uncomment app.baseURL below and
// set app.baseURL to '/your-pathname/' if running from folder in production
// app.baseUrl = '/polymer-starter-kit/';
}
app.baseUrl = '/polymer-starter-kit/';
to app.baseUrl = '/your-pathname/';
(ex: if you repo is github.com/username/bobs-awesome-site
you would change this to bobs-awesome-site
)gulp build-deploy-gh-pages
from command line