Encourage decorator-style Ember.computed/Ember.observer

[michaelrkn]

There seems to be general consensus that we should encourage people to use decorator-style methods instead of prototype extensions, except in the case of Array extensions. We should change all places in the guides that use .property to Ember.computed, and .observes to Ember.observer. For example, this:

var president = Ember.Object.create({
  firstName: "Barack",
  lastName: "Obama",

  fullName: function() {
    return this.get('firstName') + ' ' + this.get('lastName');
  }).property()
});

becomes:

var president = Ember.Object.create({
  firstName: "Barack",
  lastName: "Obama",

  fullName: Ember.computed(function() {
    return this.get('firstName') + ' ' + this.get('lastName');
  })
});

[trek]

👍