Cleanup the gemspec

Author: rafaelfranca

Rakefile

@@ -17,17 +17,3 @@ end
 
 task :default => :test
 task :test => ['test:regular', 'test:generators']
-
-specname = "rails-observers.gemspec"
-deps = `git ls-files`.split("\n") - [specname]
-
-file specname => deps do
-  files       = `git ls-files`.split("\n")
-  executables = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
-
-  require 'erb'
-
-  File.open specname, 'w:utf-8' do |f|
-    f.write ERB.new(File.read("#{specname}.erb")).result(binding)
-  end
-end

rails-observers.gemspec

@@ -11,8 +11,7 @@ Gem::Specification.new do |s|
   s.version     = Rails::Observers::VERSION
   s.license     = 'MIT'
 
-  s.files         = [".gitignore",".travis.yml","Appraisals","Gemfile","LICENSE","README.md","Rakefile","gemfiles/rails_4_0.gemfile","gemfiles/rails_4_1.gemfile","gemfiles/rails_4_2.gemfile","gemfiles/rails_5_0.gemfile","lib/generators/active_record/observer/observer_generator.rb","lib/generators/active_record/observer/templates/observer.rb","lib/generators/rails/observer/USAGE","lib/generators/rails/observer/observer_generator.rb","lib/generators/test_unit/observer/observer_generator.rb","lib/generators/test_unit/observer/templates/unit_test.rb","lib/rails-observers.rb","lib/rails/observers/action_controller/caching.rb","lib/rails/observers/action_controller/caching/sweeper.rb","lib/rails/observers/action_controller/caching/sweeping.rb","lib/rails/observers/active_model.rb","lib/rails/observers/active_model/active_model.rb","lib/rails/observers/active_model/observer_array.rb","lib/rails/observers/active_model/observing.rb","lib/rails/observers/activerecord/active_record.rb","lib/rails/observers/activerecord/base.rb","lib/rails/observers/activerecord/observer.rb","lib/rails/observers/railtie.rb","lib/rails/observers/version.rb","rails-observers.gemspec","rails-observers.gemspec.erb","test/configuration_test.rb","test/console_test.rb","test/fixtures/developers.yml","test/fixtures/minimalistics.yml","test/fixtures/topics.yml","test/generators/generators_test_helper.rb","test/generators/namespaced_generators_test.rb","test/generators/observer_generator_test.rb","test/helper.rb","test/isolation/abstract_unit.rb","test/lifecycle_test.rb","test/models/observers.rb","test/observer_array_test.rb","test/observing_test.rb","test/rake_test.rb","test/sweeper_test.rb","test/transaction_callbacks_test.rb"]
-  s.executables   = []
+  s.files         = Dir["LICENSE", "README.md", "lib/**/*"]
   s.require_paths = ["lib"]
 
   s.required_ruby_version = '>= 2.2.2'