emberjs/ember.js — pull request #1296 by sly7-7 (2012-08-19 20:08:59+00:00)
Title: update collection helper documentation against view context change

This is to answer to some users whose don't know what happen, like http://stackoverflow.com/questions/12028209/content-name-returns-empty-for-collection/12028795#12028795, #1170, or https://github.com/emberjs/ember.js/issues/729#issuecomment-7723151