Simplified Function

This plugin seems abandoned and I needed to continue to support the functionality on on older site that used it.

Here is a Gist I created that boils this plugin down to one simple filter that you can add to your custom theme or plugin:

https://gist.github.com/squarecandy/1a88ac87ec3e965c61f41208f93c6b8e

I removed all of the settings/options so just hard code your own Amazon tag on this line: $affiliate_tag = 'yourtaghere-123';