Update Rails4 example

Fix security warnings

examples/rails4/Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '4.2.10'
+gem 'rails', '4.2.11.1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use pg as the database for Heroku

examples/rails4/Gemfile.lock

@@ -1,36 +1,36 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.10)
-      actionpack (= 4.2.10)
-      actionview (= 4.2.10)
-      activejob (= 4.2.10)
+    actionmailer (4.2.11.1)
+      actionpack (= 4.2.11.1)
+      actionview (= 4.2.11.1)
+      activejob (= 4.2.11.1)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.10)
-      actionview (= 4.2.10)
-      activesupport (= 4.2.10)
+    actionpack (4.2.11.1)
+      actionview (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.2)
-    actionview (4.2.10)
-      activesupport (= 4.2.10)
+    actionview (4.2.11.1)
+      activesupport (= 4.2.11.1)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (4.2.10)
-      activesupport (= 4.2.10)
+    activejob (4.2.11.1)
+      activesupport (= 4.2.11.1)
       globalid (>= 0.3.0)
-    activemodel (4.2.10)
-      activesupport (= 4.2.10)
+    activemodel (4.2.11.1)
+      activesupport (= 4.2.11.1)
       builder (~> 3.1)
-    activerecord (4.2.10)
-      activemodel (= 4.2.10)
-      activesupport (= 4.2.10)
+    activerecord (4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       arel (~> 6.0)
-    activesupport (4.2.10)
+    activesupport (4.2.11.1)
       i18n (~> 0.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
@@ -44,11 +44,11 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.5)
     crass (1.0.4)
     erubis (2.7.0)
     execjs (2.7.0)
-    globalid (0.4.1)
+    globalid (0.4.2)
       activesupport (>= 4.2.0)
     hike (1.2.3)
     i18n (0.9.5)
@@ -61,31 +61,31 @@ GEM
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.6)
-    loofah (2.2.2)
+    loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.7.0)
+    mail (2.7.1)
       mini_mime (>= 0.1.1)
-    mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_mime (1.0.1)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
     multi_json (1.13.1)
-    nokogiri (1.8.4)
-      mini_portile2 (~> 2.3.0)
-    rack (1.6.10)
+    nokogiri (1.10.1)
+      mini_portile2 (~> 2.4.0)
+    rack (1.6.11)
     rack-cors (1.0.2)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.10)
-      actionmailer (= 4.2.10)
-      actionpack (= 4.2.10)
-      actionview (= 4.2.10)
-      activejob (= 4.2.10)
-      activemodel (= 4.2.10)
-      activerecord (= 4.2.10)
-      activesupport (= 4.2.10)
+    rails (4.2.11.1)
+      actionmailer (= 4.2.11.1)
+      actionpack (= 4.2.11.1)
+      actionview (= 4.2.11.1)
+      activejob (= 4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activerecord (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.10)
+      railties (= 4.2.11.1)
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
@@ -95,12 +95,12 @@ GEM
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.4)
       loofah (~> 2.2, >= 2.2.2)
-    railties (4.2.10)
-      actionpack (= 4.2.10)
-      activesupport (= 4.2.10)
+    railties (4.2.11.1)
+      actionpack (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (12.3.1)
+    rake (12.3.2)
     rdoc (4.3.0)
     sass (3.2.19)
     sass-rails (4.0.5)
@@ -123,7 +123,7 @@ GEM
       activesupport (>= 3.0)
       sprockets (>= 2.8, < 4.0)
     sqlite3 (1.3.13)
-    thor (0.20.0)
+    thor (0.20.3)
     thread_safe (0.3.6)
     tilt (1.4.1)
     turbolinks (5.1.1)
@@ -142,7 +142,7 @@ DEPENDENCIES
   jbuilder (~> 2.0)
   jquery-rails
   rack-cors
-  rails (= 4.2.10)
+  rails (= 4.2.11.1)
   sass-rails (~> 4.0.3)
   sdoc (~> 0.4.0)
   spring