Add `hub standalone` for installation of standalone via RubyGems

README.md

@@ -60,6 +60,14 @@ Though not recommended, `hub` can also be installed as a RubyGem:
 (It's not recommended because of the RubyGems startup time. See [this
 gist][speed] for information.)
 
+### Standalone via RubyGems
+
+Yes, the gem name is still `git-hub`:
+
+    $ gem install git-hub
+    $ hub hub standalone > ~/bin/hub && chmod 755 ~/bin/hub
+    $ gem uninstall git-hub
+
 ### Source
 
 You can also install from source:

lib/hub/commands.rb

@@ -161,6 +161,20 @@ module Hub
       exec "#{browser} #{protocol}://github.com/#{user}/#{repo}"
     end
 
+    # $ hub hub standalone
+    # Prints the "standalone" version of hub for an easy, memorable
+    # installation sequence:
+    #
+    # $ gem install git-hub
+    # $ hub standalone > ~/bin/standalone
+    # $ gem uninstall git-hub
+    def hub(args)
+      return help(args) unless args[1] == 'standalone'
+      require 'hub/standalone'
+      puts Hub::Standalone.build
+      exit
+    end
+
     def alias(args)
       shells = {
         'sh'   => 'alias git=hub',

test/hub_test.rb

@@ -147,6 +147,11 @@ config
     assert_equal "** Can't find groff(1)\n", help_manpage
   end
 
+  def test_hub_standalone
+    help_standalone = hub("hub standalone")
+    assert_equal Hub::Standalone.build, help_standalone
+  end
+
   def test_hub_open
     input   = "browse mojombo/bert"
     command = "http://github.com/mojombo/bert\n"