Show program version in footer

app.go

@@ -27,6 +27,7 @@ var (
 		Listen string `flag:"listen" default:":3000" description:"Port/IP to listen on"`
 	}{}
 	serviceHandlers = map[string]serviceHandler{}
+	version         = "dev"
 )
 
 type serviceHandlerDocumentation struct {
@@ -177,5 +178,6 @@ func handleDemoPage(res http.ResponseWriter, r *http.Request) {
 
 	tpl.Execute(res, map[string]interface{}{
 		"Examples": examples,
+		"Version":  version,
 	})
 }

assets/demoPage.tpl.html

@@ -66,6 +66,9 @@
           <p class="footnote">
             Made with <i class="fa fa-heart red"></i> and Go by <a href="https://luzifer.io/">Knut Ahlers</a>
           </p>
+          <p>
+            <code>badge-gen</code> {{ .Version }}
+          </p>
         </div>
       </div> <!-- ./row -->