docs: add examples for i2c platforms to use BlinkM

Signed-off-by: deadprogram <ron@hybridgroup.com>

examples/beaglebone_blinkm.go

@@ -14,7 +14,7 @@ func main() {
 	blinkm := i2c.NewBlinkMDriver(beagleboneAdaptor)
 
 	work := func() {
-		gobot.Every(3*time.Second, func() {
+		gobot.Every(1*time.Second, func() {
 			r := byte(gobot.Rand(255))
 			g := byte(gobot.Rand(255))
 			b := byte(gobot.Rand(255))

examples/chip_blinkm.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"time"
+
+	"gobot.io/x/gobot"
+	"gobot.io/x/gobot/drivers/i2c"
+	"gobot.io/x/gobot/platforms/chip"
+)
+
+func main() {
+	a := chip.NewAdaptor()
+	blinkm := i2c.NewBlinkMDriver(a)
+
+	work := func() {
+		gobot.Every(1*time.Second, func() {
+			r := byte(gobot.Rand(255))
+			g := byte(gobot.Rand(255))
+			b := byte(gobot.Rand(255))
+			blinkm.Rgb(r, g, b)
+			color, _ := blinkm.Color()
+			fmt.Println("color", color)
+		})
+	}
+
+	robot := gobot.NewRobot("blinkmBot",
+		[]gobot.Connection{a},
+		[]gobot.Device{blinkm},
+		work,
+	)
+
+	robot.Start()
+}

examples/raspi_blinkm.go

@@ -14,7 +14,7 @@ func main() {
 	blinkm := i2c.NewBlinkMDriver(r)
 
 	work := func() {
-		gobot.Every(3*time.Second, func() {
+		gobot.Every(1*time.Second, func() {
 			r := byte(gobot.Rand(255))
 			g := byte(gobot.Rand(255))
 			b := byte(gobot.Rand(255))