Move source files into default Eclipse locations

This is the first commit in a multi-part transition of Skandium from
using an Apache buildr build system to an Eclipse project. The aim here
is to enable users to quickly and intuitively start working with the
Skandium framework by simply importing it into the established and
popular Eclipse IDE.
Remove Apache buildr configuration files

Introduced in commit:

  commit 8bce98adbb7ef995c64cc02cf4d22aa347f4666c
  Author: Mario Leyton <mario@leyton.cl>
  Date:   Wed Nov 23 16:05:46 2011 -0300

      Moved to Apache Buildr for compilation

We won't need these if we are using Eclipse to build the project.
Import Eclipse project gitignore templates

This allows us to build the project with Eclipse without cluttering up
the git index with unwanted build files.