Restructuring to build as plain Java application.

Modifying the project so that it will run as a normal Java
application instead of requiring the PDE.
Added libraries to the git ignore file.

We do not want to check in Processing libraries.
Restructuring to Java application.

Removed unused PDE files.
Added an Ant build file.

Allows the project to be compiled, run, and packaged from the
command line with Ant.
Converted Flocking sketch to Java app.

Added a build.xml with a bundle-app task.