o Initial commit.
o some clarifications.
o Add RPi logo to runtext.
Merge branch 'master' of https://github.com/hzeller/rpi-rgb-led-matrix
o clarify README a bit.
o mark IoBits as code.
o Allow chaining of boards.
Merge branch 'master' of https://github.com/hzeller/rpi-rgb-led-matrix
o use columns provided for color fading
o sweep between more colors.
o Standard conforming error checking for mmap()
Merge branch 'master' of github.com:hzeller/rpi-rgb-led-matrix
Merge branch 'master' of github.com:hzeller/rpi-rgb-led-matrix
o some better constant naming.
o adapt to 4 chained boards connected in a 'curve'
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