Rakefile in geokit-1.3.0 vs Rakefile in geokit-1.3.1

@@ -2,9 +2,17 @@
 
 require 'rubygems'
 require 'hoe'
 require './lib/geokit.rb'
 
+# undefined method `empty?' for nil:NilClass
+# /Library/Ruby/Site/1.8/rubygems/specification.rb:886:in `validate' 
+class NilClass
+  def empty?
+    true
+  end
+end 
+
 project=Hoe.new('geokit', Geokit::VERSION) do |p|
   #p.rubyforge_name = 'geokit' # if different than lowercase project name
   p.developer('Andre Lewis', '[e-mail]')
   p.summary="Geokit provides geocoding and distance calculation in an easy-to-use API"
 end