Update README.md

README.md

@@ -3,16 +3,16 @@ r65emu
 
 Arduino emulation library for 8-bit microcomputers based on 6502, i8080 and z80.
 
-Sample Applications:
---------------------
-- [Apple1](https://github.com/jscrane/Apple1)
-- [CPM80](https://github.com/jscrane/cpm80)
+Sample Applications
+-------------------
+- [Apple-1](https://github.com/jscrane/Apple1)
+- [CPM-80](https://github.com/jscrane/cpm80)
 - [Space Invaders](https://github.com/jscrane/invaders)
 - [Pacman](https://github.com/jscrane/pacman)
 - [Commodore PET](https://github.com/jscrane/PET)
 - [Compukit UK101](https://github.com/jscrane/UK101)
 
-Configuration:
+Configuration for Arduino
 --------------
 If building using the Arduino IDE, `r65emu/hw/user.h` must be configured correctly.
 
@@ -23,27 +23,29 @@ Examples are also given for a generic `node32s` board and a homebrew `esp8bit` b
 
 Copy your configuration file to `user.h`. If the board is also mass-produced, please open a PR to add the new file to the library.
 
-Libraries:
+Some emulations require a filesystem image containing programs to be uploaded. This [arduino plugin](https://github.com/me-no-dev/arduino-esp32fs-plugin) is required for that.
+
+Libraries
 ---------
 
-Display:
+Display
 --------
 Depending on target board, one of:
 - [My port](https://github.com/jscrane/UTFT-Energia) of Henning Karlsen's [UTFT library](http://www.rinkydinkelectronics.com/library.php?id=51)
 - [TFT_eSPI](https://github.com/Bodmer/TFT_eSPI)
 - [FabGL](https://github.com/fdivitto/FabGL)
 
-Storage:
+Storage
 --------
 These are optional if the target board supports it (e.g., esp8266 or esp32 boards):
 - [Rei Vilo's port](https://github.com/rei-vilo/SD_TM4C) of Adafruit/Sparkfun's [SD library](https://github.com/adafruit/SD),
 - [My port](https://github.com/jscrane/SpiRAM) of Phil Stewart's [SpiRAM library](http://playground.arduino.cc/Main/SpiRAM)
 
-Input:
+Input
 ------
 - [PS2Keyboard](https://github.com/jscrane/PS2Keyboard)
 
-Hardware:
+Hardware
 ---------
 - A [Stellaris Launchpad](http://www.energia.nu/Guide_StellarisLaunchPad.html) _or_ 
 ESP8266 board, e.g., [WeMOS](https://www.wemos.cc/en/latest/d1/d1_mini.html), _or_