Update dependencies

Gemfile.lock

@@ -1,24 +1,37 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    activesupport (4.1.1)
+      i18n (~> 0.6, >= 0.6.9)
+      json (~> 1.7, >= 1.7.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.1)
+      tzinfo (~> 1.1)
     daemons (1.1.9)
     eventmachine (1.0.3)
     haml (4.0.5)
       tilt
+    i18n (0.6.9)
+    json (1.8.1)
+    minitest (5.3.4)
     rack (1.5.2)
-    rack-protection (1.5.2)
+    rack-protection (1.5.3)
       rack
     simpleidn (0.0.5)
-    sinatra (1.4.4)
+    sinatra (1.4.5)
       rack (~> 1.4)
       rack-protection (~> 1.4)
       tilt (~> 1.3, >= 1.3.4)
-    thin (1.6.1)
+    thin (1.6.2)
       daemons (>= 1.0.9)
       eventmachine (>= 1.0.0)
       rack (>= 1.0.0)
+    thread_safe (0.3.3)
     tilt (1.4.1)
-    whois (3.4.4)
+    tzinfo (1.1.0)
+      thread_safe (~> 0.1)
+    whois (3.5.3)
+      activesupport (>= 3)
 
 PLATFORMS
   ruby