Added devtools detection.

public/js/devtools.js

@@ -0,0 +1,14 @@
+(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+// Create a connection to the background page
+"use strict";
+
+var backgroundPageConnection = chrome.runtime.connect({
+    name: "devtools-page"
+});
+
+backgroundPageConnection.postMessage({
+    name: "init",
+    tabId: chrome.devtools.inspectedWindow.tabId
+});
+
+},{}]},{},[1]);