Jar file for the library

Hi!

Many thanks for the library.

I've removed some unused resource files and added a way to produce a jar file via ant.

You can either type `ant -f buildjar.xml jar` in the library directory or (if in a *nix environment) use the buildjar.sh script.

The jar for the current version (1.2.1) can also be found in the /jar directory.

Alex