ember-cli: Error: Missing template processor

Created a fresh Ember addon last night and made minor changes. Running npm test on the addon or consuming the addon in an app and running ember s throws the following error:

> ember test

version: 0.2.0-beta.1
Could not find watchman, falling back to NodeWatcher for file system events
Building...
Missing template processor
Error: Missing template processor
    at module.exports.preprocessTemplates (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/preprocessors.js:149:11)
    at Class.Addon.compileTemplates (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/models/addon.js:434:12)
    at Class.Addon.compileAddon (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/models/addon.js:456:28)
    at Class.Addon.treeForAddon (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/models/addon.js:382:24)
    at Class._treeFor (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/models/addon.js:282:31)
    at Class.treeFor (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/models/addon.js:253:19)
    at EmberAddon.<anonymous> (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/broccoli/ember-app.js:307:20)
    at Array.map (native)
    at EmberAddon.EmberApp.addonTreesFor (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/broccoli/ember-app.js:305:30)
    at EmberAddon._addonTree (/Users/hawkerj/Projects/ember-bug-widget/node_modules/ember-cli/lib/broccoli/ember-app.js:597:38)
npm ERR! Test failed.  See above for more details.

Ember-cli 0.2.0-beta.1 node 0.12.0 npm 2.1.8

Here’s a diff of the changes I made: https://github.com/elwayman02/ember-bug-widget/commit/01af8d5ca9f18c16a1388c1711f9b09f190785a5

To reproduce:

1. Checkout ember-bug-widget
2. Run npm install
3. Run npm test

or

1. Consume ember-bug-widget as an addon in an Ember app
2. Run ember s