Made PlotMe conform with WorldEdit's GPL

Hi, your "All rights reserved" license, as found [here](http://dev.bukkit.org/bukkit-plugins/plotme/), is not compatible with the license of one of your libraries (WorldEdit, GPL).
You must release your source (which you've done) and you must allow derivative works (which you've not done).

See also:
* [You have a GPL'ed program that I'd like to link with my code to build a proprietary program. Does the fact that I link with your program mean I have to GPL my program?](http://www.gnu.org/licenses/gpl-faq.html#LinkingWithGPL)
* [Does the GPL have different requirements for statically vs dynamically linked modules with a covered work?](http://www.gnu.org/licenses/gpl-faq.html#GPLStaticVsDynamic)