Update gems.

Gemfile.lock

@@ -43,11 +43,11 @@ GEM
       nokogiri (>= 1.5.9)
     method_source (0.8.2)
     mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    minitest (5.9.1)
     multi_json (1.12.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
-    newrelic_rpm (3.16.2.321)
+    newrelic_rpm (3.16.3.323)
     nokogiri (1.6.8)
       mini_portile2 (~> 2.1.0)
       pkg-config (~> 1.1.7)
@@ -71,7 +71,7 @@ GEM
     rack-ssl-enforcer (0.2.9)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rake (11.2.2)
+    rake (11.3.0)
     redis (3.3.1)
     redis-namespace (1.5.2)
       redis (~> 3.0, >= 3.0.4)
@@ -133,4 +133,4 @@ RUBY VERSION
    ruby 2.3.1p112
 
 BUNDLED WITH
-   1.12.5
+   1.13.2