Update led-matrix.h to convert to a 16x32 RGB matrix (half 32x32 matrix)
Update led-matrix.cc to convert to a 16x32 RGB matrix (half 32x32 matrix)
Update README.md

Added bit about the purpose of my changes
Update led-matrix.cc
This matrix only needs A, B, & C not D pins

Remove D GPIO pin from mask
Update led-matrix.cc

8 rows in a 0-based array = 0x7
Update led-matrix.h

remove unused FillScreen()
Merge branch 'master' of github.com:erget/rpi-rgb-led-matrix
Move classes from ``main.cc`` into includable file

``RGBMatrixManipulator`` and ``DisplayUpdater`` are both useful classes, but
having them in ``main.cc`` would have meant that users of these classes have to
reimplement them in their own code. Now they are located in ``led-matrix.h``,
where they can be included in client code more easily.

I left the implementation in the header because it's so small.