Refactored serialport adaptor to work with latest version of serialport

lib/adaptors/serialport.js

@@ -3,21 +3,21 @@
 var util = require("util"),
     EventEmitter = require("events").EventEmitter;
 
-var serialport,
+var Serialport,
     isChrome = typeof chrome !== "undefined";
 
 // thanks to https://github.com/jgautier/firmata/blob/master/lib/firmata.js
 try {
   if (isChrome) {
-    serialport = require("browser-serialport");
+    Serialport = require("browser-serialport");
   } else {
-    serialport = require("serialport");
+    Serialport = require("serialport");
   }
 } catch (error) {
-  serialport = null;
+  Serialport = null;
 }
 
-if (serialport == null) {
+if (Serialport == null) {
   var err = [
     "It looks like you want to connect to a Sphero 1.0/2.0 or Sphero SPRK,",
     "but did not install the 'node-serialport' module.", "",
@@ -52,7 +52,7 @@ util.inherits(Adaptor, EventEmitter);
  */
 Adaptor.prototype.open = function open(callback) {
   var self = this,
-      port = this.serialport = new serialport.SerialPort(this.conn, {});
+      port = this.serialport = new Serialport(this.conn, {});
 
   function emit(name) {
     return self.emit.bind(self, name);