Rakefile in imessage-0.2.0 vs Rakefile in imessage-0.3.0

@@ -1,27 +1,36 @@
-desc "Build standalone version of imessage"
-task :standalone do
-  mkdir_p "build"
-  File.open("build/imessage", "w") do |f|
-    f.puts "#!/usr/bin/env ruby"
-    f.puts "# This file is generated from https://github.com/linjunpop/imessage using `rake standalone`"
-    f.puts "# any changes will be overwritten."
+require "bundler/gem_tasks"
+require 'rspec/core/rake_task'
 
-    f.puts File.read("lib/imessage.rb").gsub(/^require_relative.*\n/, '')
-    f.puts File.read("lib/imessage/version.rb")
-    f.puts File.read("lib/imessage/parser.rb")
-    f.puts File.read("lib/imessage/sender.rb")
+RSpec::Core::RakeTask.new(:spec)
 
-    f.puts File.read("bin/imessage")
-      .gsub(/^require_relative.*\n/, '')
-      .gsub(%r{#!/usr/bin/env ruby}, '')
+namespace :standalone do
+  desc "Build standalone version of imessage"
+  task :build do
+    mkdir_p "build"
+    File.open("build/imessage", "w") do |f|
+      f.puts "#!/usr/bin/env ruby"
+      f.puts "# This file is generated from https://github.com/linjunpop/imessage using `rake standalone:build`"
+      f.puts "# any changes will be overwritten."
+
+      f.puts File.read("lib/imessage.rb").gsub(/^require_relative.*\n/, '')
+      f.puts File.read("lib/imessage/version.rb")
+      f.puts File.read("lib/imessage/parser.rb")
+      f.puts File.read("lib/imessage/sender.rb")
+
+      f.puts File.read("exe/imessage")
+        .gsub(/^require_relative.*\n/, '')
+        .gsub(%r{#!/usr/bin/env ruby}, '')
+    end
+    sh 'chmod +x build/imessage'
   end
-  sh 'chmod +x build/imessage'
-end
 
-desc "Install standalone script"
-task :install => :standalone do
-  prefix = ENV['PREFIX'] || ENV['prefix'] || '/usr/local'
+  desc "Install standalone script"
+  task :install => :build do
+    prefix = ENV['PREFIX'] || ENV['prefix'] || '/usr/local'
 
-  FileUtils.mkdir_p "#{prefix}/bin"
-  FileUtils.cp "build/imessage", "#{prefix}/bin"
-end
\ No newline at end of file
+    FileUtils.mkdir_p "#{prefix}/bin"
+    FileUtils.cp "build/imessage", "#{prefix}/bin"
+  end
+end
+
+task default: :spec