edtf.gemspec in edtf-0.0.3 vs edtf.gemspec in edtf-0.0.4

@@ -13,9 +13,11 @@
   s.homepage    = 'http://inukshuk.github.com/edtf-ruby'
   s.summary     = 'Extended Date/Time Format for Ruby.'
   s.description = 'An Extended Date/Time Format (EDTF) Parser for Ruby.'
   s.license     = 'FreeBSD'
 
+  s.add_runtime_dependency('activesupport', ['~>3.0'])
+  
   s.add_development_dependency('rake', ['~>0.9'])
   s.add_development_dependency('racc', ['~>1.4'])
   s.add_development_dependency('cucumber', ['~>1.0'])
   s.add_development_dependency('rspec', ['~>2.6'])
   s.add_development_dependency('ZenTest', ['~>4.6'])
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