diff --git a/README.md b/README.md
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+++ b/README.md
@@ -1,2 +1,4 @@
 # ruby-rgen
 
+RGen is a framework for Model Driven Software Development (MDSD) in Ruby. This means that it helps you build Metamodels, instantiate Models, modify and transform Models and finally generate arbitrary textual content from it.
+
diff --git a/rgen-0.6.6.gem b/rgen-0.6.6.gem
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+%define gemdir %(ruby -rubygems -e'puts Gem.default_dir')
+%define gemname %(echo %{name} | sed "s|^ruby-||")
+Name:          ruby-rgen
+Version:       0.6.6
+Release:       1mamba
+Summary:       A framework for Model Driven Software Development (MDSD) in Ruby
+Group:         System/Libraries/Ruby
+Vendor:        openmamba
+Distribution:  openmamba
+Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
+URL:           http://rubygems.org/gems/rgen
+Source:        http://rubygems.org/downloads/rgen-%{version}.gem
+License:       GPL
+## AUTOBUILDREQ-BEGIN
+## AUTOBUILDREQ-END
+BuildRequires: ruby-devel
+Requires:      ruby
+
+%description
+RGen is a framework for Model Driven Software Development (MDSD) in Ruby. This means that it helps you build Metamodels, instantiate Models, modify and transform Models and finally generate arbitrary textual content from it.
+
+%prep
+
+%build
+
+%install
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+gem install --no-user-install --ignore-dependencies -i "%{buildroot}%{gemdir}" \
+--no-ri --no-rdoc -n "%{buildroot}%{_bindir}" "%{SOURCE0}"
+
+rm -rf %{buildroot}%{gemdir}/cache
+rm -f %{buildroot}%{gemdir}/gems/%{gemname}-%{version}/.gitignore
+
+%clean
+[ "%{buildroot}" != / ] && rm -rf "%{buildroot}"
+
+%files
+%defattr(-,root,root)
+%dir %{gemdir}/gems/%{gemname}-%{version}
+%{gemdir}/gems/%{gemname}-%{version}/*
+%{gemdir}/specifications/%{gemname}-%{version}.gemspec
+
+%changelog
+* Wed Dec 11 2013 Silvan Calarco <silvan.calarco@mambasoft.it> 0.6.6-1mamba
+- package created using the webbuild interface