Update README.md

README.md

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-# HeartMonitor
+# ESP8266 Heart Monitor with ECG style graphic
+
+## Materials needed
+- ESP8266 board
+- AD8232 - the one I used can be found [here](https://www.dfrobot.com/product-1510.html)
+- ECG electrode pads - example [here](https://www.amazon.com/gp/product/B0757JNVGK)
+
+## Configuration
+Connect the ECG module to ground, 5v, and analog pin on ESP8266.  Be sure to open the sketch file (heart_monitor.ino) and input your WiFi settings.
+
+Run the client WPF application.  The ESP8266 will detect there is no client connected, and will broadcast a packet over UDP.  The desktop client will see this UDP broadcast, and automatically connect.  Takes up to 3 seconds.  Once connection has been made, you should begin seeing the graph running.
+
+## ECG Placement
+- Important note: wearing a shirt will cause massive interference from the static electricity
+- I have found the Fontaine placement method works best.
+
+![Fontaine Lead Placement](https://litfl.com/wp-content/uploads/2019/03/Fontaine-bipolar-precordial-lead-electrocardiography-F-ECG-768x607.png "Fontaine Lead Placement")
+
+If you purchased the DFRobot module I did, then here is the color guide:
+- RA: Red
+- LA: Green
+- LL: Yellow