chore: Require Ruby 2.1 or higher

.travis.yml

@@ -16,9 +16,6 @@ script:
   - bundle exec rspec
 
 rvm:
-  - 1.9.3
-  - jruby-19mode
-  - 2.0.0
   - 2.1.10
   - 2.2.2
   - 2.3.1
@@ -36,14 +33,5 @@ matrix:
   fast_finish: true
 
   exclude:
-    - rvm: 1.9.3
-      gemfile: gemfiles/rack_2.gemfile
-
-    - rvm: jruby-19mode
-      gemfile: gemfiles/rack_2.gemfile
-
-    - rvm: 2.0.0
-      gemfile: gemfiles/rack_2.gemfile
-
     - rvm: 2.1.10
       gemfile: gemfiles/rack_2.gemfile

omniauth-saml.gemspec

@@ -11,6 +11,8 @@ Gem::Specification.new do |gem|
   gem.email         = '[email protected]'
   gem.homepage      = 'https://github.com/omniauth/omniauth-saml'
 
+  gem.required_ruby_version = '>= 2.1'
+
   gem.add_runtime_dependency 'omniauth', '~> 1.3'
   gem.add_runtime_dependency 'ruby-saml', '~> 1.4'
 

spec/spec_helper.rb

@@ -1,14 +1,12 @@
-if RUBY_VERSION >= '1.9'
-  require 'simplecov'
+require 'simplecov'
 
-  if ENV['TRAVIS']
-    require 'coveralls'
-    Coveralls.wear!
-  end
-
-  SimpleCov.start
+if ENV['TRAVIS']
+  require 'coveralls'
+  Coveralls.wear!
 end
 
+SimpleCov.start
+
 require 'omniauth-saml'
 require 'rack/test'
 require 'rexml/document'