Added missing library to installer script

Author: makermelissa

arduino_libinstall

@@ -153,6 +153,7 @@ echo "Installing libraries:"
 [ ! -d $HOME/Arduino/libraries/Adafruit_Zero_I2S_Library ] && arduino --install-library "Adafruit Zero I2S Library"
 [ ! -d $HOME/Arduino/libraries/Adafruit_Zero_PDM_Library ] && arduino --install-library "Adafruit Zero PDM Library"
 [ ! -d $HOME/Arduino/libraries/Adafruit_ZeroTimer_Library ] && arduino --install-library "Adafruit ZeroTimer Library"
+[ ! -d $HOME/Arduino/libraries/RGB_matrix_Panel ] && arduino --install-library "RGB matrix Panel"
 [ ! -d $HOME/Arduino/libraries/U8g2_for_Adafruit_GFX ] && arduino --install-library "U8g2_for_Adafruit_GFX"
 [ ! -d $HOME/Arduino/libraries/Wemos_Matrix_Adafruit_GFX ] && arduino --install-library "Wemos Matrix Adafruit GFX"
 [ ! -d $HOME/Arduino/libraries/WaveHC ] && arduino --install-library "WaveHC"