croxton/Ifelse — pull request #1 by joelkesler (2014-10-08 00:55:12+00:00)
Title: Fixing a weird problem with PHP 5.6.1

I am getting errors when using ifelse on EE 2.9.2 with PHP 5.6.1:

A PHP Error was encountered

Severity: 8192

Message: Non-static method Ifelse::usage() should not be called statically, assuming $this from incompatible context

Filename: ifelse/pi.ifelse.php

Line Number: 10

This type of fix was proposed here.
http://stackoverflow.com/questions/21437371/strict-standards-non-static-method-assuming-this-from-incompatible-context

Am I doing it correctly?