rwaldron/spark-io — pull request #37 by Resseguie (2014-09-24 19:28:14+00:00)
Title: Removed duplicate env description, fixed syntax

We had instructions for setting environment variables in two places, with the more complete description at the bottom of the page.

The example at the top had spaces, which don't work.

Also took out old note referencing PWM pins since they are all supported now and the note was confusing without historical context.