assemble/handlebars-helpers — pull request #150 by sheedy (2014-08-26 03:54:08+00:00)
Title: Add ifEven helper

Based off of [this Stack Overflow answer](http://stackoverflow.com/questions/18976274/odd-and-even-number-comparison-helper-for-handlebars/18993156#18993156).

Conditionally render a block if `@index` is an even number