update aws-sdk and add a region to resolve 500 errors

Author: fatboypunk

Gemfile

@@ -37,7 +37,7 @@ gem "jquery-atwho-rails", "~> 1.3.2" # autocomplete
 gem "haml-rails"
 gem "audited-activerecord", "~> 4.0"
 gem "paperclip", "~> 5.1.0"
-gem "aws-sdk", "< 2.0"
+gem "aws-sdk"
 gem "redcarpet"
 gem "holidays"
 gem "sprockets-rails", "~> 2.3"