Fix CI: upgrade required version of aws-sdk to 2.3.0

Appraisals

-appraise "4.2.awsv2.0" do
+appraise "4.2.awsv2.3" do
   gem "rails", "~> 4.2.0"
-  gem "aws-sdk", "~> 2.0.0"
+  gem "aws-sdk", "~> 2.3.0"
 end
 
-appraise "4.2.awsv2.1" do
-  gem "rails", "~> 4.2.0"
-  gem "aws-sdk", "~> 2.1.0"
-
-  group :development, :test do
-    gem 'mime-types', '>= 1.16', '< 4'
-  end
-end
-
-appraise "5.0.awsv2.0" do
+appraise "5.0.awsv2.3" do
   gem "rails", "5.0.0.beta3"
-  gem "aws-sdk", "~> 2.0.0"
+  gem "aws-sdk", "~> 2.3.0"
 
   group :development, :test do
     gem 'mime-types', '>= 1.16', '< 4'
   end
 end
-
-appraise "5.0.awsv2.1" do
-  gem "rails", "5.0.0.beta3"
-  gem "aws-sdk", "~> 2.1.0"
-end

README.md

@@ -592,7 +592,7 @@ You may also choose to store your files using Amazon's S3 service. To do so, inc
 the `aws-sdk` gem in your Gemfile:
 
 ```ruby
-gem 'aws-sdk', '>= 2.0.34'
+gem 'aws-sdk', '>= 2.3.0'
 ```
 
 And then you can specify using S3 from `has_attached_file`.

gemfiles/4.2.awsv2.1.gemfile

-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "sqlite3", "~> 1.3.8", :platforms => :ruby
-gem "pry"
-gem "rails", "~> 4.2.0"
-gem "aws-sdk", "~> 2.1.0"
-
-group :development, :test do
-  gem "activerecord-import"
-  gem "mime-types", ">= 1.16", "< 4"
-  gem "builder"
-  gem "rubocop", :require => false
-end
-
-gemspec :path => "../"

gemfiles/4.2.awsv2.0.gemfile → gemfiles/4.2.awsv2.3.gemfile

@@ -5,7 +5,7 @@ source "https://rubygems.org"
 gem "sqlite3", "~> 1.3.8", :platforms => :ruby
 gem "pry"
 gem "rails", "~> 4.2.0"
-gem "aws-sdk", "~> 2.0.0"
+gem "aws-sdk", "~> 2.3.0"
 
 group :development, :test do
   gem "activerecord-import"

gemfiles/4.2.awsv2.gemfile

-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "sqlite3", "~> 1.3.8", :platforms => :ruby
-gem "jruby-openssl", :platforms => :jruby
-gem "activerecord-jdbcsqlite3-adapter", :platforms => :jruby
-gem "rubysl", :platforms => :rbx
-gem "racc", :platforms => :rbx
-gem "pry"
-gem "rails", "~> 4.2.0"
-gem "aws-sdk", "~> 2.0"
-
-group :development, :test do
-  gem "mime-types", "~> 1.16"
-  gem "builder"
-  gem "rubocop", :require => false
-end
-
-gemspec :path => "../"

gemfiles/5.0.awsv2.0.gemfile

-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "sqlite3", "~> 1.3.8", :platforms => :ruby
-gem "pry"
-gem "rails", "5.0.0"
-gem "aws-sdk", "~> 2.0.0"
-
-group :development, :test do
-  gem "activerecord-import"
-  gem "mime-types", ">= 1.16", "< 4"
-  gem "builder"
-  gem "rubocop", :require => false
-end
-
-gemspec :path => "../"

gemfiles/5.0.awsv2.1.gemfile

-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "sqlite3", "~> 1.3.8", :platforms => :ruby
-gem "pry"
-gem "rails", "5.0.0"
-gem "aws-sdk", "~> 2.1.0"
-
-group :development, :test do
-  gem "activerecord-import"
-  gem "mime-types"
-  gem "builder"
-  gem "rubocop", :require => false
-end
-
-gemspec :path => "../"

gemfiles/5.0.awsv2.gemfile → gemfiles/5.0.awsv2.3.gemfile

@@ -9,7 +9,7 @@ gem "rubysl", :platforms => :rbx
 gem "racc", :platforms => :rbx
 gem "pry"
 gem "rails", "~> 5.0.0"
-gem "aws-sdk", "~> 2.0"
+gem "aws-sdk", "~> 2.3"
 
 group :development, :test do
   gem "mime-types", "~> 1.16"

paperclip.gemspec

@@ -35,7 +35,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('rspec', '~> 3.0')
   s.add_development_dependency('appraisal')
   s.add_development_dependency('mocha')
-  s.add_development_dependency('aws-sdk', '>= 2.0.34', '< 3.0')
+  s.add_development_dependency('aws-sdk', '>= 2.3.0', '< 3.0')
   s.add_development_dependency('bourne')
   s.add_development_dependency('cucumber', '~> 1.3.18')
   s.add_development_dependency('aruba', '~> 0.9.0')