Added an install task to the Rakefiles in trunk and stable.

git-svn-id: svn://hamptoncatlin.com/haml/trunk@615 7063305b-7217-0410-af8c-cdc13e5119b9

Rakefile

@@ -67,6 +67,7 @@ unless ARGV[0] == 'benchmark'
       It was originally envisioned as a plugin for Ruby on Rails,
       but it can function as a stand-alone templating engine.
     END
+    #'
     
     readmes = FileList.new('*') do |list|
       list.exclude(/[a-z]/)
@@ -93,6 +94,10 @@ unless ARGV[0] == 'benchmark'
     pkg.need_tar_bz2 = true
   end
 
+  task :install => [:package] do
+    sh %{sudo gem install pkg/haml-#{File.read('VERSION').strip}}
+  end
+
   # ----- Documentation -----
 
   require 'rake/rdoctask'