changed .bat file. nothing major at all.
Merge branch 'tree' of https://github.com/jensenr30/GridSim into tree
Merge branch 'master' of https://github.com/jensenr30/GridSim
Merge branch 'master' of https://github.com/jensenr30/GridSim into tree
added exe
made weird smoke. when it smokes, it pours
made some minor changes to mud and grass root.
Merge branch 'tree'