initial commit
o Accurately send timing and sequence diff information.
o add luminance lut
o update README
o add Youtube link.
o Add copyleft header
o make #defines static const variables.
o prepare double buffering.
o Accept up to a full frame at once in a UDP packet
  (requires change https://github.com/robot-head/PixelPusher-java/commit/81b97a3ce810257a94a77a74bda207cbe9964ce3
   in PixelPusher library )