grape.gemspec in grape-0.13.0 vs grape.gemspec in grape-0.14.0

@@ -29,13 +29,14 @@
   s.add_development_dependency 'rack-test'
   s.add_development_dependency 'rspec', '~> 3.0'
   s.add_development_dependency 'bundler'
   s.add_development_dependency 'cookiejar'
   s.add_development_dependency 'rack-contrib'
-  s.add_development_dependency 'mime-types'
+  s.add_development_dependency 'mime-types', '< 3.0'
   s.add_development_dependency 'appraisal'
+  s.add_development_dependency 'benchmark-ips'
+  s.add_development_dependency 'rubocop', '0.35.1'
 
-  s.files         = `git ls-files`.split("\n")
-  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
-  s.executables   = `git ls-files -- bin/*`.split("\n").map { |f| File.basename(f) }
+  s.files         = Dir['**/*'].keep_if { |file| File.file?(file) }
+  s.test_files    = Dir['spec/**/*']
   s.require_paths = ['lib']
 end