custom image via short code

@scott Paterson

Would you be at all interested in adding a feature to this plugin so that you can override the “image” string in the short code so that you can have unlimited custom button images? I’ve added it to a quick fork on github, but it’s a very simple change:

https://github.com/acjohnson/wp-easy-paypal-donation/commit/9aa2e966549b055a20c7669bd455eef155a9fcbe