Added Pokeball and Masterball classes under wmateer/advanced directory

A class for Pokeball constructs a Pokeball shape.
A class for Masterball construts a Masterball shape, which inherits from Pokeball.

NOTE:Because I was confused regarding multiple ${USER.env} instances between computer accounts, it is required to run command 'export USER=wmateer' to work correctly with current package setup.  Although the javadoc still redirects to http://www.cs.ucsb.edu/~frettfuzz/cs56/lab05/ .
This problem is due to the fact that i did not want to change the build.xml due to merge conflicts that would arise.