web.config.erb

<configuration>
    <system.webServer>
        <handlers>
            <add name="iisnode" path="index.js" verb="*" modules="iisnode" />
        </handlers>

        <iisnode nodeProcessCommandLine="&quot;%programfiles(x86)%\nodejs\node.exe&quot;"
                 watchedFiles="*.js;node_modules\*;routes\*.js;views\*.jade;middleware\*.js" />

        <rewrite>
            <rules>
                <rule name="hello">
                    <match url="/*" />
                    <action type="Rewrite" url="/index.js" />
                </rule>
            </rules>
        </rewrite>
    </system.webServer>
    <appSettings>
        <% if @environment %>
          <% @environment.each do |key,value| %>
            <add key="<%= key %>" value="<%= value %>" />
          <% end %>
        <% end %>
        <%if @settings %>
          <% @settings.each do |key,value| %>
            <add key="<%= key %>" value="<%= value %>" />
          <% end %>
        <% end %>
    </appSettings>
</configuration>