Update dependencies, fix piezo solution. Fixes #9

Author: Alan Shaw

exercises/ping_bell/solution/solution.js

@@ -7,7 +7,7 @@ board.on('ready', function () {
   var server = dgram.createSocket('udp4')
 
   server.on('message', function () {
-    piezo.song('cdfda ag cdfdg gf ', '111111442111111442')
+    piezo.tone(five.Piezo.Notes.c4, 1000)
   })
 
   server.bind(1337)

package.json

@@ -37,7 +37,7 @@
     "chai": "^1.9",
     "dnode": "^1.2.0",
     "ioboard": "^3.0",
-    "johnny-five": "^0.7.39",
+    "johnny-five": "^0.8.1",
     "proxyquire": "^1.0.0",
     "sinon": "^1.9",
     "workshopper": "^1.2.2",
@@ -50,7 +50,7 @@
   "devDependencies": {
     "gulp-jshint": "^1.6.1",
     "gulp": "^3.6.2",
-    "jshint-stylish": "^0.2.0",
+    "jshint-stylish": "^0.4.0",
     "gulp-shell": "^0.2.5"
   }
 }