def download_catalog(name, url)
      catalogs_local_path = Pathname.new(ENV['HOME'])
                               .join(GENERAMBA_HOME_DIR)
                               .join(CATALOGS_DIR)
      current_catalog_path = catalogs_local_path
                                 .join(name)

      if File.exists?(current_catalog_path)
        g = Git.open(current_catalog_path)
        g.pull
      else
        Git.clone(url, name, :path => catalogs_local_path)
      end

      return current_catalog_path
    end
Clones a template catalog from a remote repository

@param name [String] The name of the template catalog
@param url [String] The url of the repository

@return [Pathname] A filepath to the downloaded catalog