update simple form to reduce warnings

Author: fatboypunk

Gemfile

@@ -17,7 +17,7 @@ gem "rack-timeout"
 gem "rails", "~> 4.2.10"
 gem "recipient_interceptor"
 gem "sass-rails", "~> 5.0.1"
-gem "simple_form", "~> 3.1.0"
+gem "simple_form", "~> 3.5.0"
 gem "title"
 gem "uglifier"
 gem "unicorn"

Gemfile.lock

@@ -299,9 +299,9 @@ GEM
     sexp_processor (4.6.1)
     shoulda-matchers (2.7.0)
       activesupport (>= 3.0.0)
-    simple_form (3.1.0)
-      actionpack (~> 4.0)
-      activemodel (~> 4.0)
+    simple_form (3.5.0)
+      actionpack (> 4, < 5.2)
+      activemodel (> 4, < 5.2)
     simplecov (0.8.2)
       docile (~> 1.1.0)
       multi_json
@@ -410,7 +410,7 @@ DEPENDENCIES
   sass-rails (~> 5.0.1)
   select2-rails
   shoulda-matchers (~> 2.7.0)
-  simple_form (~> 3.1.0)
+  simple_form (~> 3.5.0)
   simplecov
   spring
   spring-commands-rspec