Removed submodule for HAP-NodeJS and moved to NPM

It seemed to be easier all around to use NPM to manage the dependancy on HAP-NodeJS.

This PR removes the submodule, and adjusts the paths of all checked in shims to reference the NPM module instead.

I also updated the documentation to reflect the simpler install ;)

platforms/Domoticz.js

@@ -25,7 +25,7 @@
 // When you attempt to add a device, it will ask for a "PIN code".
 // The default code for all HomeBridge accessories is 031-45-154.
 //
-var types = require("../lib/HAP-NodeJS/accessories/types.js");
+var types = require("HAP-NodeJS/accessories/types.js");
 var request = require("request");
 
 function DomoticzPlatform(log, config){

platforms/ISY.js

@@ -1,4 +1,4 @@
-var types = require("../lib/HAP-NodeJS/accessories/types.js");
+var types = require("HAP-NodeJS/accessories/types.js");
 var xml2js = require('xml2js');
 var request = require('request');
 var util = require('util');

platforms/PhilipsHue.js

@@ -33,7 +33,7 @@ var hue = require("node-hue-api"),
     HueApi = hue.HueApi,
     lightState = hue.lightState;
 
-var types = require("../lib/HAP-NodeJS/accessories/types.js");
+var types = require("HAP-NodeJS/accessories/types.js");
 
 function PhilipsHuePlatform(log, config) {
   this.log = log;

platforms/SmartThings.js

@@ -1,7 +1,7 @@
 // SmartThings JSON API SmartApp required
 // https://github.com/jnewland/SmartThings/blob/master/JSON.groovy
 //
-var types = require("../lib/HAP-NodeJS/accessories/types.js");
+var types = require("HAP-NodeJS/accessories/types.js");
 var request = require("request");
 
 function SmartThingsPlatform(log, config){

platforms/Wink.js

@@ -1,4 +1,4 @@
-var types = require("../lib/HAP-NodeJS/accessories/types.js");
+var types = require("HAP-NodeJS/accessories/types.js");
 var wink = require('wink-js');
 
 var model = {