Anahkiasen/former — pull request #327 by andrewmile (2014-06-01 00:30:36+00:00)
Title: Added optional $step param to range method

The $step param defaults to 1 but allows for use of PHP's optional third param which increments the array by the specified integer.
```
range(15, 60, 15); //15, 30, 45, 60