Merge pull request #4 from harwooja/master

Terrain Structure
branch reset to master branch
Merge branch 'master' of https://github.com/harwooja/LowPoly into Simon
Added some particle functionality for snow
removed garbage
partial lava functionality
increased lava functionality, burns tiles now
cleaned up a bit
cleaning up
particle system is more realistic and cleaner
added interface image for when paused

i tried adding this to my own branch but apparently i have to commit it
to the master first, after today i should be able to work in my own
branch
Merge branch 'master' into stuart
fixed small fullscreen bug
terrain loaded from heighmap now
cleaner particle system
moved image stuff to its own class, cleaned it up
functional particle system with terrain
got pause menu working
Merge branch 'stuart'

Conflicts:
	ParticleSystem.cpp
	Terrain.cpp
	main.cpp
fixed conflicts.. where did ParticleList go tho??!