Implemented auto port detection

README.md

@@ -12,17 +12,11 @@ cargo install --git https://git.zumepro.cz/michal.prochazka/tulflash
 ## Flashing Intel HEX binaries
 
 ```
-# Linux
-tulflash --port /dev/ttyUSBx write <path-to-hex>
-
-# macOS
-tulflash --port /dev/tty.usbserial-xxx write <path-to-hex>
-
-# Wokňous
-tulflash --port COMx write <path-to-hex>
+# All OSes, automatically detects all ports
+tulflash write <path-to-hex>
 ```
 
-If the flash fails, try to add `--slow` before the `--port` argument (should not be needed though).
+If the flash fails, try to add `--slow` before `write` (should not be needed though).
 
 The tool also allows reading and erasing the chip, figure that out on your own if you need that (although `tulflash --help` might guide you if you ask it nicely).
 
@@ -32,6 +26,6 @@ You'll need to clone this repo (or just [download the file](example.c)) and inst
 
 ```
 sdcc example.c
-tulflash --port ... write example.ihx
+tulflash write example.ihx
 ```