plu - plu: Example and a bit of documentation.

Log Message:
-----------
Example and a bit of documentation.  Added a simple ANT build file

Modified Files:
--------------
    plu:
        .cvsignore (r1.1 -> r1.2)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plu/plu/.cvsignore.diff?r1=1.1&r2=1.2)

Added Files:
-----------
    plu:
        build.xml (r1.1)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plu/plu/build.xml?rev=1.1&content-type=text/x-cvsweb-markup)
    plu/sql:
        examples.sql (r1.1)

(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plu/plu/sql/examples.sql?rev=1.1&content-type=text/x-cvsweb-markup)
    plu/doc:
        USAGE.txt (r1.1)
        (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/plu/plu/doc/USAGE.txt?rev=1.1&content-type=text/x-cvsweb-markup)