Major rewrite:

Configure a global default and named overrides
Use helper methods to set/modify configurations at runtime
Set the headers in middleware based on the configuration saved to request.env

Configuration changes:
All headers require string values except for CSP and HPKP
CSP directives must be arrays of strings, no more support for space-delimited strings or procs

Author: oreoshake

.rspec

@@ -0,0 +1 @@
+--order rand

.travis.yml

@@ -7,5 +7,7 @@ rvm:
   - "1.9.3"
   - "jruby-19mode"
 
+before_install: gem update bundler
+
 sudo: false
 cache: bundler

Gemfile

@@ -1,16 +1,13 @@
-source 'https://rubygems.org'
+source "https://rubygems.org"
 
 gemspec
 
 group :test do
-  gem 'test-unit', '~> 3.0'
-  gem 'rails', '3.2.22'
-  gem 'sqlite3', :platforms => [:ruby, :mswin, :mingw]
-  gem 'jdbc-sqlite3', :platforms => [:jruby]
-  gem 'rspec-rails', '>= 3.1'
-  gem 'rspec', '>= 3.1'
-  gem 'growl'
-  gem 'rb-fsevent'
-  gem 'coveralls', :platforms => [:ruby_19, :ruby_20, :ruby_21]
-  gem 'i18n', '< 0.7.0', :platforms => [:ruby_18]
+  gem "pry-nav"
+  gem "rack"
+  gem "guard-rspec", platforms: [:ruby_19, :ruby_20, :ruby_21, :ruby_22]
+  gem "rspec", ">= 3.1"
+  gem "growl"
+  gem "rb-fsevent"
+  gem "coveralls", platforms: [:ruby_19, :ruby_20, :ruby_21, :ruby_22]
 end

Guardfile

@@ -0,0 +1,12 @@
+guard :rspec, cmd: "bundle exec rspec", all_on_start: true, all_after_pass: true do
+  require "guard/rspec/dsl"
+  dsl = Guard::RSpec::Dsl.new(self)
+
+  # RSpec files
+  rspec = dsl.rspec
+  watch(rspec.spec_helper) { rspec.spec_dir }
+  watch(rspec.spec_support) { rspec.spec_dir }
+  watch(rspec.spec_files)
+
+  watch(%r{^lib/(.+)\.rb$}) { |m| "spec/lib/#{m[1]}_spec.rb" }
+end