calc.gemspec in calc-nik-0.0.3 vs calc.gemspec in calc-nik-0.0.4

@@ -10,9 +10,11 @@
   gem.email         = ["[e-mail]"]
   gem.description   = %q{Basic calculator}
   gem.summary       = %q{Basic calculator}
   gem.homepage      = ""
 
+  gem.extensions << "ext/calc/extconf.rb"
+
   gem.add_development_dependency "rspec"
   gem.add_development_dependency "simplecov"
   gem.add_development_dependency "rake"
 
   gem.rubyforge_project = "calc-nik"