Added more features

Arduino/src/README.md

@@ -10,7 +10,18 @@ Don't forget to include the non-standard ft817 library, found under ft817_buddy/
 - Display current A,B,C key functions
 - 3 pages of 6 soft-keys
 - Backlight
-
+- Tune signal on/off (Transmit an AM carrier, suitable for driving auto-ATU)
+- Toggle IPO
+- Toggle NAR filter
+- Toggle Break-In
+- Toggle FT-817 internal Keyer
+- Toggle RF Gain/ Squelch
+- Toggle VFO A/B
+- Set FT-817 internal keyer to preset wpm (12, 15, 18 in my case)
+- External keyer: [K1EL K16 chip](https://hamcrafters2.com/files/k16man_R10.pdf) integration
+-- Command and M1, M2, M3, M4 buttons
+-- Onboard piezo buzzer and LED for K16 feedback
+-- Control speed using CMD+paddle (K1EL's "Fast Speed Change" feature)
 
 ### Licence
 This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License