added initial swagger docs.

src/docs/public.go

@@ -0,0 +1,11 @@
+package docs
+
+import "sour.is/x/toolbox/httpsrv"
+
+func init() {
+	httpsrv.AssetRegister("docs", httpsrv.AssetRoutes{
+		{"Assets", "/docs/", httpsrv.FsHtml5(assetFS())},
+	})
+}
+
+//go:generate go-bindata-assetfs -pkg docs public/