Directory structure

Began creating more structure for source files.
Added a src/ folder and src/physics/ folder.
Deleted duplicates

Deleted duplicates that didn't come through in the last commit.
Added flaps to pod
Merge branch 'master' into simon

Conflicts:
	Makefile
	src/PodGameManager.cpp
Fixing merge

Fixed the makefile and some other stuff with the merge.
Not default fullscreen

Made it not default to fullscreen at a resolution that doesn't work on
my monitor. It is still resizable.
Merge pull request #4 from michaelwiktorek/simon

Simon