Initial version RBTreeHash in avl_tree gem

TODO
 - optimize
 - make more easier to read

Gemfile

@@ -0,0 +1,11 @@
+source "http://rubygems.org"
+
+group :development do
+  gem 'rake'
+end
+
+group :test do
+  gem 'simplecov', :require => false
+end
+
+gemspec

Rakefile

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+require 'rake'
+require 'rake/testtask'
+require 'rubygems/package_task'
+
+task :default => :test
+
+require 'bundler'
+Bundler::GemHelper.install_tasks
+
+Rake::TestTask.new('test') do |test|
+  test.libs << 'lib'
+  test.verbose = true
+  test.test_files = Dir.glob('test/test_*.rb')
+end