Rakefile in zsh_dots-0.5.1 vs Rakefile in zsh_dots-0.5.3

@@ -1,9 +1,26 @@
 #!/usr/bin/env rake
+#
+# This is for Rake tasks that pertain to the development and
+# maintainence of DOTS itself. All tasks that can be loaded
+# with `rake -g` should be put into a .rake file in ~/.dots/lib/tasks.
+#
+# These tasks are also available within DOTS natively.
+
 require 'rake'
-require 'rspec/core/rake_task'
+require 'bundler/gem_tasks'
 
-# Global Rake tasks, available anywhere by running `rake -g`
 Dir["lib/tasks/*.rake"].each { |rake_file| load rake_file }
 
-# Test task for the local testing suite
-RSpec::Core::RakeTask.new(:test)
+begin
+  require 'rspec/core/rake_task'
+  RSpec::Core::RakeTask.new(:test)
+rescue LoadError => e
+  # RSpec can not be run in the gem installation.
+end
+
+desc "Update DOTS, Antigen, and all installed plugins."
+task :update do
+  sh "cd ~/.dots && git pull origin master"
+  sh "cd ~/.dots && git submodule sync"
+  sh "antigen-update"
+end