Add e2e tests

package.json

@@ -4,7 +4,7 @@
   "description": "Swagger UI is a dependency-free collection of HTML, Javascript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API",
   "scripts": {
     "build": "PATH=$PATH:./node_modules/.bin cake dist",
-    "test": "./node_modules/coffee-script/bin/cake dist"
+    "test": "./node_modules/coffee-script/bin/cake dist; ./node_modules/mocha/bin/mocha src/test/e2e/index.js"
   },
   "repository": {
     "type": "git",
@@ -24,8 +24,12 @@
     "less": "~1.4.2"
   },
   "devDependencies": {
-    "express": "3.x",
+    "chai": "^1.10.0",
+    "cors": "2.1.1",
     "docco": "0.4.x",
-    "cors": "2.1.1"
+    "express": "3.x",
+    "http-server": "^0.7.4",
+    "mocha": "^2.1.0",
+    "selenium-webdriver": "^2.44.0"
   }
 }