Rakefile in bullet-4.7.1 vs Rakefile in bullet-4.8.0

@@ -1,11 +1,10 @@
 $LOAD_PATH.unshift File.expand_path("../lib", __FILE__)
 require "bundler"
 Bundler.setup
 
 require "rake"
-require "rdoc/task"
 require "rspec"
 require "rspec/core/rake_task"
 
 require "bullet/version"
 
@@ -33,13 +32,21 @@
 RSpec::Core::RakeTask.new('spec:progress') do |spec|
   spec.rspec_opts = %w(--format progress)
   spec.pattern = "spec/**/*_spec.rb"
 end
 
-Rake::RDocTask.new do |rdoc|
-  rdoc.rdoc_dir = "rdoc"
-  rdoc.title = "bullet #{Bullet::VERSION}"
-  rdoc.rdoc_files.include("README*")
-  rdoc.rdoc_files.include("lib/**/*.rb")
+
+begin
+  require 'rdoc/task'
+
+  desc "Generate documentation for the plugin."
+  Rake::RDocTask.new do |rdoc|
+    rdoc.rdoc_dir = "rdoc"
+    rdoc.title = "bullet #{Bullet::VERSION}"
+    rdoc.rdoc_files.include("README*")
+    rdoc.rdoc_files.include("lib/**/*.rb")
+  end
+rescue LoadError
+  puts 'RDocTask is not supported for this platform'
 end
 
 task :default => :spec