Pin the selenium-webdriver version so that it correctly matches protr…

…actor.

When the library versions differ at runtime you get strange test behaviour where the jasmine wrappers to not evaluate the control flow correctly.
More details here: angular/protractor#2790

package.json

@@ -14,7 +14,9 @@
   "devDependencies": {
     "jshint": "2.5.0",
     "minijasminenode": "1.1.1",
-    "selenium-webdriver": "2.43.4"
+  },
+  "dependencies": {
+    "selenium-webdriver": "2.48.2"
   },
   "repository": {
     "type": "git",