Refactoring project:
1) Add .gitignore.
2) Renamed Makefile and cast it to canonical type.
3) Renamed README and placed some description of project into it.
4) Removed binary file from git repo.
Add COPYRIGHT file with GPLv2.
Changed head of file monteCarloSpatialGrid.cpp
Add description and copyright.
TOTAL F*CKING REFACTORING!

File monteCarloSpatialGrid.cpp has been split into 3 files:
main.cpp        -- start point;
utils.cpp       -- structs, classes and useful functions;
glut_window.cpp -- work with GLUT, render the window, calculate result and draw it.

What next?
All calculations are still in function GLUTWindow::DrawGLScene()! It's
very bad.

P.S. README has been changed.
Merge pull request #1 from VarLog/master

Refactoring:
* Split the source from monolithic into separate modules.
* Added README and other good-practice stuff.