Fix RuboCop violations in gemspec

omniauth.gemspec

@@ -11,14 +11,14 @@ Gem::Specification.new do |spec|
   spec.cert_chain    = %w(certs/sferik.pem)
   spec.description   = %q{A generalized Rack framework for multiple-provider authentication.}
   spec.email         = ['michael@intridea.com', 'sferik@gmail.com']
-  spec.files         = `git ls-files`.split($/)
+  spec.files         = `git ls-files`.split($INPUT_RECORD_SEPARATOR)
   spec.homepage      = 'http://github.com/intridea/omniauth'
   spec.licenses      = ['MIT']
   spec.name          = 'omniauth'
   spec.require_paths = ['lib']
   spec.required_rubygems_version = '>= 1.3.5'
   spec.signing_key   = File.expand_path('~/.gem/private_key.pem') if $PROGRAM_NAME =~ /gem\z/
   spec.summary       = spec.description
-  spec.test_files    = spec.files.grep(%r{^spec/})
+  spec.test_files    = spec.files.grep(/^spec\//)
   spec.version       = OmniAuth::VERSION
 end