npm install --save-dev ember-cli-hbars

If only it were this easy to live on the edge. For now you'll have to configure Ember CLI to use at least Ember 1.10.0-beta.1.

You can read this post learn more but the tldr:

rm -rf bower_components

Then update to Ember canary:

bower install --save ember#canary

If you'd like to explicity lock in to the minimum version instead use:

bower install --save ember#1.10.0-beta.1

Then:

bower install --save handlebars#~2.0.0
bower install
npm uninstall --save-dev broccoli-ember-hbs-template-compiler
npm install --save-dev ember-cli-htmlbars