Add pixel factor in the server so that clients ca push more effective pixels

protocol.md

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+# The protocol for the UDP pixelvloed client and server (v1)
+
+Pixelvloed allows clients to send up to a configurable amount of pixels per message.
+Each message should contain the RGB or RGBA mode indentifier, and the version bit.
+Each pixel in the message is a set of (x,y,r,g,b) or (x,y,r,g,b,a)
+  X and Y are the positions on screen, and should be unsigned shorts
+  rgb and a are unsigned chars
+
+All values should be little endian.
+
+Mixing rgb and rgba pixels in one message is not supported.
+
+# The Autodetection system
+
+A pixelvloed server should broadcast a package advertising its settings with the following string content
+
+"%s:%f %s:%d %d*%d" % (PROTOCOL_PREAMBLE, PROTOCOL_VERSION, UDP_IP, UDP_PORT, width, height)
+
+A client should listen for these packages, split it on spaces and check the preample and protocol_version to see if it is capable of speaking the requested protocol.
+
+An example of a broadcasted packet would be:
+
+pixelvloed:1.00 192.168.0.1:5005 1920*1080