diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d87d4be
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,17 @@
+*.gem
+*.rbc
+.bundle
+.config
+.yardoc
+Gemfile.lock
+InstalledFiles
+_yardoc
+coverage
+doc/
+lib/bundler/man
+pkg
+rdoc
+spec/reports
+test/tmp
+test/version_tmp
+tmp
diff --git a/.rvmrc b/.rvmrc
new file mode 100644
index 0000000..9409848
--- /dev/null
+++ b/.rvmrc
@@ -0,0 +1 @@
+rvm use --create ruby-1.9.3-p125@madvertise-ext
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..b3a5c8b
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,5 @@
+language: ruby
+rvm:
+  - 1.8.7
+  - 1.9.2
+  - 1.9.3
diff --git a/.yardopts b/.yardopts
new file mode 100644
index 0000000..22ce944
--- /dev/null
+++ b/.yardopts
@@ -0,0 +1 @@
+--no-private
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..6f9cfeb
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,15 @@
+source :rubygems
+
+gemspec
+
+gem 'rake'
+gem 'bundler'
+
+group :test do
+  gem 'redcarpet'
+  gem 'reek'
+  gem 'rspec'
+  gem 'ruby2ruby', '=1.3.0' # 1.3.1 is broken :(
+  gem 'simplecov'
+  gem 'yard'
+end
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..229cf5a
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2012 madvertise Mobile Advertising GmbH
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..ab161e7
--- /dev/null
+++ b/README.md
@@ -0,0 +1,31 @@
+# Madvertise::Ext
+
+The madvertise-ext gem provides a bunch of ruby extensions.
+
+[![Build Status](https://secure.travis-ci.org/madvertise/ext.png)](http://travis-ci.org/madvertise/ext)
+
+## Installation
+
+Add this line to your application's Gemfile:
+
+    gem 'madvertise-ext'
+
+And then execute:
+
+    $ bundle
+
+Or install it yourself as:
+
+    $ gem install madvertise-ext
+
+## Usage
+
+Please refer to the [API documentation](http://rubydoc.info/gems/madvertise-ext/frames).
+
+## Contributing
+
+1. Fork it
+2. Create your feature branch (`git checkout -b my-new-feature`)
+3. Commit your changes (`git commit -am 'Added some feature'`)
+4. Push to the branch (`git push origin my-new-feature`)
+5. Create new Pull Request
diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..16f9fcb
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,8 @@
+#!/usr/bin/env rake
+
+require "bundler/setup"
+require "bundler/gem_tasks"
+
+Dir['tasks/**/*.rake'].each { |t| load t }
+
+task :default => [:spec]
diff --git a/lib/madvertise-ext.rb b/lib/madvertise-ext.rb
new file mode 100644
index 0000000..21842da
--- /dev/null
+++ b/lib/madvertise-ext.rb
@@ -0,0 +1,3 @@
+require 'madvertise/ext/version'
+require 'madvertise/ext/config'
+require 'madvertise/ext/environment'
diff --git a/lib/madvertise/ext/config.rb b/lib/madvertise/ext/config.rb
new file mode 100644
index 0000000..2bf349d
--- /dev/null
+++ b/lib/madvertise/ext/config.rb
@@ -0,0 +1,69 @@
+require 'yaml'
+
+class Section < Hash
+  def deep_merge(other_hash)
+    self.merge(other_hash) do |key, oldval, newval|
+      oldval = oldval.to_hash if oldval.respond_to?(:to_hash)
+      newval = newval.to_hash if newval.respond_to?(:to_hash)
+      oldval.is_a?(Hash) && newval.is_a?(Hash) ? oldval.deep_merge(newval) : newval
+    end
+  end
+
+  def deep_merge!(other_hash)
+    replace(deep_merge(other_hash))
+  end
+
+  def method_missing(name, *args)
+    if name.to_s[-1] == ?=
+      self[name.to_s[0..-2].to_sym] = args.first
+    else
+      value = self[name]
+      value.is_a?(Proc) ? value.call : value
+    end
+  end
+end
+
+class Configuration < Section
+  def initialize(base_config_path, mode = :development, mixin_path = nil, mixins_to_use = [])
+    config = build_config(YAML.load(File.read(base_config_path)))
+
+    @mode = mode
+
+    self.update(config.generic)
+    self.deep_merge!(config[mode]) if config.has_key?(mode)
+
+    @mixin_path = mixin_path
+    @mixins_to_use = mixins_to_use
+
+    load_mixins if @mixin_path and @mixins_to_use.any?
+  end
+
+  def mixin_files
+    @mixins_to_use.map do |mixin_name|
+      File.join(@mixin_path, "#{mixin_name}.yml")
+    end
+  end
+
+  def load_mixins
+    mixin_files.each do |mixin_file|
+      mixin = build_config(YAML.load(File.read(mixin_file)))
+      if mixin.has_key?(@mode)
+        self.deep_merge!(mixin[@mode])
+      else
+        self.deep_merge!(mixin)
+      end
+    end
+  end
+
+  def build_config(hash)
+    Section.new.tap do |result|
+      hash.each do |key, value|
+        result[key.to_sym] = if value.is_a?(Hash)
+                               build_config(value)
+                             else
+                               value
+                             end
+      end
+    end
+  end
+end
diff --git a/lib/madvertise/ext/environment.rb b/lib/madvertise/ext/environment.rb
new file mode 100644
index 0000000..b9cba7c
--- /dev/null
+++ b/lib/madvertise/ext/environment.rb
@@ -0,0 +1,33 @@
+class Environment
+  attr_accessor :key
+
+  def initialize(key)
+    @key = key
+  end
+
+  def mode
+    ENV[@key] || 'development'
+  end
+
+  def to_sym
+    mode.to_sym
+  end
+
+  def prod?
+    to_sym == :production
+  end
+
+  def dev?
+    to_sym == :development
+  end
+
+  def test?
+    to_sym == :test
+  end
+
+  def set(value)
+    ENV[@key] = value.to_s
+  end
+end
+
+Env = Environment.new
diff --git a/lib/madvertise/ext/mask.reek b/lib/madvertise/ext/mask.reek
new file mode 100644
index 0000000..0e764ef
--- /dev/null
+++ b/lib/madvertise/ext/mask.reek
@@ -0,0 +1,7 @@
+---
+NestedIterators:
+  exclude:
+    - Configuration#build_config
+FeatureEnvy:
+  exclude:
+    - Section#deep_merge
diff --git a/lib/madvertise/ext/version.rb b/lib/madvertise/ext/version.rb
new file mode 100644
index 0000000..82a723e
--- /dev/null
+++ b/lib/madvertise/ext/version.rb
@@ -0,0 +1,6 @@
+module Madvertise
+  module Ext
+    # @private
+    VERSION = "0.1.0"
+  end
+end
diff --git a/madvertise-ext.gemspec b/madvertise-ext.gemspec
new file mode 100644
index 0000000..9cbf5bf
--- /dev/null
+++ b/madvertise-ext.gemspec
@@ -0,0 +1,17 @@
+# -*- encoding: utf-8 -*-
+require File.expand_path('../lib/madvertise/ext/version', __FILE__)
+
+Gem::Specification.new do |gem|
+  gem.name          = "madvertise-ext"
+  gem.version       = Madvertise::Ext::VERSION
+  gem.authors       = ["Benedikt Böhm"]
+  gem.email         = ["benedikt.boehm@madvertise.com"]
+  gem.description   = %q{Ruby extensions}
+  gem.summary       = %q{Ruby extensions}
+  gem.homepage      = "https://github.com/madvertise/ext"
+
+  gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
+  gem.files         = `git ls-files`.split("\n")
+  gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
+  gem.require_paths = ["lib"]
+end
diff --git a/spec/spec.opts b/spec/spec.opts
new file mode 100644
index 0000000..53607ea
--- /dev/null
+++ b/spec/spec.opts
@@ -0,0 +1 @@
+--colour
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
new file mode 100644
index 0000000..ecc39e6
--- /dev/null
+++ b/spec/spec_helper.rb
@@ -0,0 +1,26 @@
+require 'rubygems'
+require 'rspec'
+require 'fileutils'
+
+require 'simplecov'
+SimpleCov.start
+
+ROOT = "#{File.dirname(__FILE__)}/../tmp"
+
+$:.unshift(File.dirname(__FILE__) + '/../lib')
+require 'madvertise-ext'
+
+RSpec.configure do |config|
+  # == Mock Framework
+  #
+  # RSpec uses it's own mocking framework by default. If you prefer to
+  # use mocha, flexmock or RR, uncomment the appropriate line:
+  #
+  # config.mock_with :mocha
+  # config.mock_with :flexmock
+  # config.mock_with :rr
+
+  # setup a fake root
+  config.before(:all) { File.directory?(ROOT) ? FileUtils.rm_rf("#{ROOT}/*") : FileUtils.mkdir_p(ROOT) }
+  config.after(:all) { FileUtils.rm_rf("#{ROOT}/*") }
+end
diff --git a/tasks/reek.rake b/tasks/reek.rake
new file mode 100644
index 0000000..68f7507
--- /dev/null
+++ b/tasks/reek.rake
@@ -0,0 +1,5 @@
+require 'reek/rake/task'
+
+Reek::Rake::Task.new do |t|
+  t.fail_on_error = false
+end
diff --git a/tasks/rspec.rake b/tasks/rspec.rake
new file mode 100644
index 0000000..1375ffb
--- /dev/null
+++ b/tasks/rspec.rake
@@ -0,0 +1,7 @@
+require 'rspec'
+require 'rspec/core/rake_task'
+
+desc "Run the specs"
+RSpec::Core::RakeTask.new do |t|
+  t.rspec_opts = ['--options', "spec/spec.opts"]
+end
diff --git a/tasks/yard.rake b/tasks/yard.rake
new file mode 100644
index 0000000..3eee672
--- /dev/null
+++ b/tasks/yard.rake
@@ -0,0 +1,5 @@
+require 'yard'
+
+YARD::Rake::YardocTask.new do |t|
+  t.files = ['lib/**/*.rb', 'README.rdoc']
+end