Upgrade Selenium to work with Firefox 42

Author: eliotsykes

Gemfile.lock

@@ -50,7 +50,7 @@ GEM
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
       xpath (~> 2.0)
-    childprocess (0.5.6)
+    childprocess (0.5.7)
       ffi (~> 1.0, >= 1.0.11)
     cliver (0.3.2)
     coderay (1.1.0)
@@ -209,7 +209,7 @@ GEM
       sass (~> 3.2.2)
       sprockets (~> 2.8, < 3.0)
       sprockets-rails (~> 2.0)
-    selenium-webdriver (2.46.2)
+    selenium-webdriver (2.48.1)
       childprocess (~> 0.5)
       multi_json (~> 1.0)
       rubyzip (~> 1.0)