Rakefile in ore-0.1.4 vs Rakefile in ore-0.2.0

@@ -1,9 +1,25 @@
 require 'rubygems'
 require 'rake'
 
-require 'rspec/core/rake_task'
-RSpec::Core::RakeTask.new
+begin
+  gem 'rspec', '~> 2.0.0'
+  require 'rspec/core/rake_task'
+
+  RSpec::Core::RakeTask.new
+rescue LoadError
+  task :spec do
+    abort "Please run `gem install rspec` to install RSpec."
+  end
+end
 task :default => :spec
 
-require 'yard'
-YARD::Rake::YardocTask.new
+begin
+  gem 'yard', '~> 0.6.0'
+  require 'yard'
+  
+  YARD::Rake::YardocTask.new
+rescue LoadError
+  task :yard do
+    abort "Please run `gem install yard` to install YARD."
+  end
+end