Added length property to Ember.Map
Ember.computed learns oneWay computed
Merge pull request #2692 from stefanpenner/master

Ember.computed learns oneWay computed
update doc example to current router
Merge pull request #2693 from stefanpenner/master

update doc example to current router
Merge pull request #2251 from sebastianseilund/map-length

Added length property to Ember.Map
[fixes #2697]