Directory structure change and first lines of code

-> documentation moved to doc/

+ Makefile
+ Makefile.dep
+ include/AreaCell.h
+ include/EventArea.h
+ include/Unit.h
+ src/EventArea.cpp
+ src/Unit.cpp
+ src/main.cpp
+ testing/sample_area1
Working version of program, which loads event area from file, displays
it on screen (using ncurses) with one unit (moved using arrow keys).