correct an error in intialization
more engine work
Merge branch 'master' of https://github.com/gooftroop/CS6310P2

Conflicts:
	src/simulation/Earth.java
engine work, removed errors from tests
implements Message
changed the bug for loop through the grid
working version of simulation, but cooling seems not very good
merge conflict resolved
merged Brandon's big commit
Modified GUI to use EarthSimEngine
removed SimulationRun.java