Add info about sdcard and neopixel

README.md

@@ -13,6 +13,8 @@ ESPGeiger is an open-source project that makes it easy to create your own IOT co
 - 📟  Accurate counting via interrupt and non-blocking functions (accuracy tested up to 100k CPM), with optional hardware counter (ESP32 only - PCNT)
 - ⏲️  No dead time due to waiting for 3rd party services
 - 🌐  Upload and share statistics to services online and locally via MQTT and Home Assistant automatic discovery
+- 💾  Save your data locally to a Fat16/32 SDCard over SPI
+- 💡  Colourful and intuitive feedback using a WS2812X NeoPixel
 - 🚧  Test builds for emulating pulse and serial based counters
 
 <img src="https://raw.githubusercontent.com/steadramon/ESPGeiger/main/docs/img/statuspage.png" width="50%"/>