Update docs, add upload target to makefile.

Makefile

@@ -1,2 +1,12 @@
+BOARD_NAME ?= esp8266:esp8266:huzzah
+UPLOAD_PORT ?= /dev/ttyUSB0
+
+.PHONY: all build upload
+
+all: build
+
 build:
-	arduino-cli compile -b esp8266:esp8266:huzzah smartswitch.ino
+	arduino-cli compile -b ${BOARD_NAME} smartswitch.ino
+
+upload:
+	arduino-cli upload -b ${BOARD_NAME} -p ${UPLOAD_PORT} smartswitch.ino

config.h.example

@@ -8,14 +8,12 @@
 //
 // We would expect the webhook to return something like:
 //
-// 0 1
-// 1 0
-// 2 1
+// [1 0 1]
 //
 // to activate the momentary switch, (pin 5) deactivate the first
 // latched switch, (pin 8) and activate the second latched switch. (pin 10)
 const int PIN_MAP[][2] = {
-  {5, 0},
+  {5, 1},
   {8, 1},
   {10, 1}
 };

readme.md

@@ -41,12 +41,10 @@ only be high for a short time. 1 is for latched mode; the pin will stay high unt
 
 
 ## Webhook data
-The webhook should always return a page in the following format:
+The webhook should always return a page in the following (JSON-compatible) format:
 
 ```
-index_0 state_0
-index_1 state_1
-...
+[state_0, state_1, ...]
 ```
 
 Where index and state are both integers. If you are expecting momentary input, you should return the