First pass at the API 🦄

examples/simple.js

@@ -0,0 +1,13 @@
+const { Board } = require('../src/relays')
+
+const numRelays = 2
+const relays = new Board(numRelays)
+
+// Make sure the relay defaults to off
+relays.allOff()
+
+relays.on(1)
+setTimeout(() => relays.off(1), 500)
+setTimeout(() => relays.on(2), 500)
+setTimeout(() => relays.allOn(), 1000)
+setTimeout(() => relays.allOff(), 2000)