Robert Zhang's original source code

Initial commit of Robert Zhang's original source code found at
http://library.wolfram.com/infocenter/Demos/4821/
Added .gitignore
Convert to unix line endings

mprep is fussy about line endings
Restore main() function
Specify matlab start command

Specify matlab start command for non-Windows systems
Added Makefile and wrapper script
Ensure compatibility with mwSize MATLAB engine datatype

Also update MathLink functions to latest syntax
Added installation instructions
Updated .m file and notebook