Gemspec fixes.

twemproxy_exporter.gemspec

@@ -6,21 +6,13 @@ require 'twemproxy_exporter/version'
 Gem::Specification.new do |spec|
   spec.name          = "twemproxy_exporter"
   spec.version       = TwemproxyExporter::VERSION
-  spec.authors       = ["xavierholt", "Andrew Tongen"]
-  spec.email         = ["[email protected]"]
+  spec.licenses      = ["Apache-2.0"]
 
-  spec.summary       = %q{A Prometheus exporter for Twemproxy / Nutcracker.}
-  spec.description   = %q{A Prometheus exporter for Twemproxy / Nutcracker.}
+  spec.summary       = "A Prometheus exporter for Twemproxy / Nutcracker."
   spec.homepage      = "https://github.com/xavierholt/twemproxy_exporter"
+  spec.authors       = ["Kevin Burk", "Andrew Tongen"]
+  spec.email         = ["[email protected]"]
 
-  # Prevent pushing this gem to RubyGems.org. To allow pushes either set the 'allowed_push_host'
-  # to allow pushing to a single host or delete this section to allow pushing to any host.
-  if spec.respond_to?(:metadata)
-    spec.metadata['allowed_push_host'] = "TODO: Set to 'http://mygemserver.com'"
-  else
-    raise "RubyGems 2.0 or newer is required to protect against " \
-      "public gem pushes."
-  end
 
   spec.files         = `git ls-files -z`.split("\x0").reject do |f|
     f.match(%r{^(test|spec|features)/})
@@ -34,5 +26,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rspec", "~> 3.0"
 
   spec.add_runtime_dependency "prometheus-client", "~> 0.6.0"
-  spec.add_runtime_dependency "rack", "~> 2.0.0"
+  spec.add_runtime_dependency "rack", "~> 2.0"
 end