Rakefile in rgl-0.5.1 vs Rakefile in rgl-0.5.2

@@ -4,16 +4,16 @@
 require 'bundler/setup'
 
 require 'rubygems/package_task'
 
 require 'rake/testtask'
+require 'rake/clean'
 require 'yard'
 
 $:.unshift File.join(File.dirname(__FILE__), 'lib')
 require 'rgl/base' # require base module to get RGL_VERSION
 
-SUMMARY = "Ruby Graph Library"
 SOURCES = FileList['lib/**/*.rb']
 
 # The default task is run if rake is given no explicit arguments.
 desc "Default Task"
 task :default => :test
@@ -22,23 +22,9 @@
 
 Rake::TestTask.new do |t|
   t.libs << 'test'
   t.pattern = 'test/*_test.rb'
   t.verbose = true
-end
-
-begin
-  require 'rcov/rcovtask'
-
-  desc "Calculate code coverage with rcov"
-  Rcov::RcovTask.new(:rcov) do |t|
-    t.libs << 'test'
-    t.pattern = 'test/*_test.rb'
-    t.verbose = true
-    t.rcov_opts += ['--exclude', 'test/,gems/']
-  end
-rescue LoadError
-  nil # rcov is available only on Ruby 1.8
 end
 
 # Git tagging
 
 desc "Commit all changes as a new version commit. Tag the commit with v<version> tag"