Remove support for mongoid 2.4 and 3.x

Conflicts:
	.travis.yml

.travis.yml

@@ -15,9 +15,6 @@ gemfile:
   - gemfiles/active_record_41.gemfile
   - gemfiles/active_record_42.gemfile
   - gemfiles/active_record_edge.gemfile
-  - gemfiles/mongoid_24.gemfile
-  - gemfiles/mongoid_30.gemfile
-  - gemfiles/mongoid_31.gemfile
   - gemfiles/mongoid_40.gemfile
   - gemfiles/sinatra_13.gemfile
   - gemfiles/sinatra_14.gemfile
@@ -38,10 +35,6 @@ matrix:
       gemfile: gemfiles/active_record_42.gemfile
     - rvm: 1.8.7
       gemfile: gemfiles/active_record_edge.gemfile
-    - rvm: 1.8.7
-      gemfile: gemfiles/mongoid_30.gemfile
-    - rvm: 1.8.7
-      gemfile: gemfiles/mongoid_31.gemfile
     - rvm: 1.8.7
       gemfile: gemfiles/mongoid_40.gemfile
     - rvm: ruby-head

README.rdoc

@@ -33,7 +33,7 @@ The pagination helper outputs the HTML5 <nav> tag by default. Plus, the helper s
 
 * Haml 3+
 
-* Mongoid 2+
+* Mongoid 4+
 
 == Install
 

gemfiles/mongoid_24.gemfile

@@ -1,21 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'railties', '>= 3.2.3'
-gem 'mongoid', '~> 2.4.0'
-gem 'rspec-rails', '~> 2.14.1'
-
-# stick to versions that work under Ruby 1.8 for now
-gem 'capybara', '< 2.1'
-gem 'nokogiri', '< 1.6'
-gem 'rubyzip', '< 1'
-gem 'mime-types', '< 2'
-gem 'database_cleaner', '< 1.0.0'
-
-platforms :rbx do
-  gem 'rubysl', '~> 2.0'
-  gem 'racc'
-  gem 'minitest'
-  gem 'rubinius-developer_tools'
-end
-
-gemspec :path => '../'

gemfiles/mongoid_30.gemfile

@@ -1,17 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'railties', '>= 3.2.3'
-gem 'mongoid', '~> 3.0.0'
-gem 'rspec-rails', '~> 2.14.1'
-gem 'origin'
-gem 'moped'
-gem 'activesupport', '~> 3.2.18'
-
-platforms :rbx do
-  gem 'rubysl', '~> 2.0'
-  gem 'racc'
-  gem 'rubysl-test-unit'
-  gem 'rubinius-developer_tools'
-end
-
-gemspec :path => '../'

gemfiles/mongoid_31.gemfile

@@ -1,16 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'railties', '~> 3.2'
-gem 'mongoid', '~> 3.1.0'
-gem 'rspec-rails', '~> 2.14.1'
-gem 'origin'
-gem 'moped'
-
-platforms :rbx do
-  gem 'rubysl', '~> 2.0'
-  gem 'racc'
-  gem 'rubysl-test-unit'
-  gem 'rubinius-developer_tools'
-end
-
-gemspec :path => '../'