Drop support for Sinatra 1.3, only support Sinatra 1.4.x

This reverts commit 1957dc7bc4

.travis.yml

@@ -19,7 +19,6 @@ gemfile:
   - gemfiles/mongoid_30.gemfile
   - gemfiles/mongoid_31.gemfile
   - gemfiles/mongoid_40.gemfile
-  - gemfiles/sinatra_13.gemfile
   - gemfiles/sinatra_14.gemfile
 
 sudo: false

README.rdoc

@@ -31,6 +31,8 @@ The pagination helper outputs the HTML5 <nav> tag by default. Plus, the helper s
 
 * Rails 3.0, 3.1, 3.2, 4.0, 4.1
 
+* Sinatra 1.4
+
 * Haml 3+
 
 * Mongoid 2+

Rakefile

@@ -23,7 +23,6 @@ namespace :spec do
     mongoid_31
     mongoid_30
     mongoid_24
-    sinatra_13
     sinatra_14
   )
 

gemfiles/sinatra_13.gemfile

@@ -1,34 +0,0 @@
-source 'https://rubygems.org'
-
-gem 'activerecord', '~> 3.2.3', :require => 'active_record'
-gem 'sinatra', '~> 1.3.0'
-gem 'tilt', '~> 1.3.0'
-gem 'padrino-helpers', '~> 0.10.6'
-gem 'rack-test', '>= 0'
-gem 'sinatra-contrib', '~> 1.3.0'
-gem 'rspec', '~> 2.14.1'
-
-# stick to versions that work under Ruby 1.8 for now
-gem 'mime-types', '< 2.0'
-gem 'nokogiri', '< 1.6'
-gem 'capybara', '< 2.1'
-gem 'rubyzip', '< 1'
-
-platforms :ruby do
-  if RUBY_VERSION > "2.1.0"
-    gem 'sqlite3'
-  else
-    gem 'sqlite3', '1.3.8'
-  end
-end
-platforms :jruby do
-  gem 'activerecord-jdbcsqlite3-adapter', '>= 1.3.0'
-end
-platforms :rbx do
-  gem 'rubysl', '~> 2.0'
-  gem 'racc'
-  gem 'rubysl-test-unit'
-  gem 'rubinius-developer_tools'
-end
-
-gemspec :path => '../'