Lower target ruby version to match Rails 5

Author: JonRowe

.rubocop.yml

@@ -10,6 +10,11 @@ AllCops:
 Bundler/DuplicatedGem:
   Enabled: false
 
+Gemspec/RequiredRubyVersion:
+  # Rubocop checks that the target ruby version matches the gemspec version
+  # but doesnt have a 2.2 option
+  Enabled: false
+
 Layout/AccessModifierIndentation:
   Enabled: false
 

rspec-rails.gemspec

@@ -11,7 +11,7 @@ Gem::Specification.new do |s|
   s.homepage    = "https://github.com/rspec/rspec-rails"
   s.summary     = "RSpec for Rails"
   s.description = "rspec-rails is a testing framework for Rails 5+."
-  s.required_ruby_version = ">= 2.3.0"
+  s.required_ruby_version = ">= 2.2.0"
 
   s.metadata = {
     'bug_tracker_uri'   => 'https://github.com/rspec/rspec-rails/issues',