Rakefile in bones-3.8.5 vs Rakefile in bones-3.9.0

- old
+ new

@@ -10,9 +10,10 @@
 Bones {
   name         'bones'
   authors      'Tim Pease'
   email        'tim.pease@gmail.com'
   url          'http://rubygems.org/gems/bones'
+  license      'MIT'
 
   spec.opts.concat %w[--color --format documentation]
   notes.exclude %w[^README\.rdoc$ ^data/]
   gem.extras[:post_install_message] = <<-MSG
 --------------------------