unapi_link script to add unapi links

Inspired in #code4lib, I am getting interested in Greasemonkey, I started by reading "Dive into Greasemonkey" and studying Dan Chud's COINS-PMH code. Here is a little script of adding unapi links to unapi-compatible page, it adds links right next to unapi span.

To try it out:

1. Install greasemonkey, restart firefox, come back here, etc
2. Install unapi_link.user.js right-click (ctrl-click on mac)
3. Visit a unapi compatible page, such as quaedam

Notice unapi apis links will appear, but I agree it's difficult to find the tiny link ;-), to make the point, I also put a screen caputure here.