In brocfile.js ( ember-cli-build.js in new versions) change the constructor to
var app = new EmberApp({ vendorFiles: { 'jquery.js': false, 'handlebars.js': false, 'ember.js': false } });
Now include the ones in your index.html, the old way, and enjoy the fact that almost every user browser already has jquery cached, even if they haven't visited your site before.
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