Add overview to README

README.md

@@ -1,20 +1,16 @@
-# About
+# Overview
 
-While setting up some basic home automation, I realized that there things that I'd like to track simply by pressing a button. For example, has anyone fed the dog this morning? She's more than willing to ask for breakfast even if she's already eaten it :)
+IoTButton is a low-cost, low-powered, WiFi-enabled button targetting simple home
+automation use-cases. The Button integrates simply into HomeAssistant's device
+discovery mechanism, making integration with the rest of the Home Assistant
+ecosystem straightforward.
 
-While searching for a good product for this, I couldn't find one, so I decided to make my own. The primary goals are:
+The button combines an ESP8266 for WiFi connectivity, and an ATTINY85 for
+low-power monitoring and triggering the ESP8266.
 
-1. It must be cheap, ideally around \$5.
+# FAQ
-2. It must be reasonably manufacturable (on the order of 10s to 100s).
-3. It must be re-useable, no tossing it when the battery dies!
-4. It must reasonably small and inoffensive.
-5. It must integrate with HomeAssistant, ideally with minimal configuration.
 
-Unfortunately, shortly after I ordered my first rev of PCBs, Ikea released the $10 [Shortcut Button](https://www.ikea.com/ca/en/p/tradfri-shortcut-button-white-20356382/) which meets most of my criteria. Falling victim to the sunk cost fallacy, I plan to see it through to making a few of these.
+# Why are there two microcontrollers?
-
-# Q&A
-
-## Why are there two microcontrollers?
 
 Cost and ease of development.