Don't package test files with gem

bundler.gemspec

@@ -20,12 +20,11 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'ronn', '~> 0.7.3'
   spec.add_development_dependency 'rspec', '~> 3.0'
 
-  spec.files       = `git ls-files -z`.split("\x0")
+  spec.files       = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   # we don't check in man pages, but we need to ship them because
   # we use them to generate the long-form help for each command.
   spec.files      += Dir.glob('lib/bundler/man/**/*')
 
-  spec.test_files  = spec.files.grep(%r{^spec/})
   spec.executables   = %w(bundle bundler)
   spec.require_paths = ["lib"]
 end

lib/bundler/templates/newgem/newgem.gemspec.tt

@@ -22,9 +22,8 @@ Gem::Specification.new do |spec|
   spec.homepage      = "TODO: Put your gem's website or public repo URL here."
   spec.license       = "MIT"
 
-  spec.files         = `git ls-files -z`.split("\x0")
+  spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
-  spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ["lib"]
 
   spec.add_development_dependency "bundler", "~> <%= Bundler::VERSION.split(".")[0..1].join(".") %>"