WebThumb API docs

The WebThumb API docs have been updated. Your feedback on the docs or the API itself would be appreciated.

I would like to make a new version of the API at some point, the goal in that would be to handle errors cleanly as XML responses and too allow for other services to use the same end point. Of course an API update isn’t at the top of my list, I’m going to generate over 200,000 thumbnails this month (compared to 179,190 last month and an average of 61,000 per month last year)

This new demand has put scalability improvements to keep up with the growth as my next job to tackle (after these new docs of course :-).