Switch to using a separate module for blinking.

package.json

@@ -8,6 +8,7 @@
   },
   "dependencies": {
     "JSONStream": "~0.7.1",
+    "blinker": "git+ssh://git@bitbucket.org:rulemotion/blinker.git#v0.0.1",
     "bluebird": "^2.6.0",
     "coffee-script": "~1.8.0",
     "csr-gen": "~0.2.1",

src/lib/blink.coffee

@@ -1,43 +0,0 @@
-Promise = require 'bluebird'
-fs = Promise.promisifyAll require 'fs'
-
-# Helps in blinking the LED from the given end point.
-module.exports = exports = (ledFile) ->
-	ledOn = ->
-		fs.writeFileAsync(ledFile, 1)
-	ledOff = ->
-		fs.writeFileAsync(ledFile, 0)
-
-	blink = (ms = 200) ->
-		ledOn()
-		.delay(ms)
-		.then(ledOff)
-
-	blink.pattern = do ->
-		blinking = null
-		start = (pattern) ->
-			Promise.resolve([0...pattern.blinks]).cancellable()
-			.each ->
-				blink(pattern.onDuration)
-				.delay(pattern.offDuration)
-			.delay(pattern.pause)
-			.then ->
-				start(pattern)
-		return {
-			start: (pattern = {}) ->
-				return false if blinking?
-				fullPattern =
-					blinks: pattern.blinks ? 1
-					onDuration: pattern.onDuration ? 200
-					offDuration: pattern.offDuration ? 200
-					pause: pattern.pause ? 0
-				blinking = start(fullPattern)
-				return
-			stop: ->
-				return false if not blinking?
-				blinking.cancel().catch(Promise.CancellationError, ->)
-				ledOff()
-				blinking = null
-		}
-
-	return blink

src/utils.coffee

@@ -5,7 +5,7 @@ config = require './config'
 mixpanel = require 'mixpanel'
 request = require './request'
 networkCheck = require './lib/network-check'
-blink = require('./lib/blink')(config.ledFile)
+blink = require('blinker')(config.ledFile)
 
 utils = exports