Weird error with Ember controllers

I'm on Ember Cli version: 0.2.3

I'm currently exploring with Ember, and trying a very simple app.

I have this in my templates/about.hbs

<h1>About</h1>

<p>I'll write something interesting here</p>

<button type="btn btn=primary"{{action 'clickMe'}}>Click me!</button>

and in my controllers/about_controller.js

Blogger.AboutController = Ember.Controller.extend({
  actions: {
    clickMe: function() {
      alert('Something something');
    }
  }
});

when I click on the button i get this error, I checked the syntax and can't seem to catch what's wrong. I need some fresh eyes.

Uncaught Error: Nothing handled the action 'clickMe'. If you did handle the action, this error can be caused by returning true from an action handler in a controller, causing the action to bubble.

Now, I understand what the message is saying, but I don't know how to fix it yet.