Please add readable

[david-a-wheeler]

Please add the "readable" project.

You can download by using the "master" (release) branch:

git clone git://git.code.sf.net/p/readable/code readable-code

... or download the distribution files:
https://sourceforge.net/projects/readable/files/

It's typically installed using autotools. By default it also installs guile (Scheme) files, but this can be disabled using:
./configure --without-guile

If a change to the project would make it easier for quicklisp, let us know:
https://lists.sourceforge.net/lists/listinfo/readable-discuss