Updated README

Author: marcmerlin

README.md

@@ -61,13 +61,17 @@ cd rpi-rgb-led-matrix; make
 
 ## X11
 
-To emulate a TFT this project uses X11. Therefore you have to install X11 support, something like:
+If you don't use my special rPI RGBPanel driver ( https://github.com/marcmerlin/FastLED_RPIRGBPanel_GFX ), 
+to emulate a TFT this project then uses X11. Therefore you have to install X11 support, something like:
 ```
 sudo apt-get install libx11-dev
 sudo pacman -Sy libx11
 yum install libx11
 ```
 
+BUG: Even if you use the RGB Panel output, compilation will likely needlessly require X11 even if the end binary
+will not require it.
+
 ## Compilation
 
 ### Makefile