add package synopsis

fileserver/fileserver.go

@@ -1,3 +1,5 @@
+// Package fileserver implements a gemini handler function to serve files with optional auto
+// indexing for directory listings.
 package fileserver
 
 import (

gemini/gemini.go

@@ -1,3 +1,5 @@
+// Package gemini implements the protocol for use with a file server, certificate generation and
+// facilities for interceptors and middlewares.
 package gemini
 
 import (

middleware/doc.go

@@ -0,0 +1,3 @@
+// Package middleware add few reusable middleware packages that work together with the gemini
+// package.
+package middleware