func PlainText(h http.Handler) http.Handler {
	fn := func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/plain")
		h.ServeHTTP(w, r)
	}
	return http.HandlerFunc(fn)
}
PlainText sets the content-type of responses to text/plain.
package main
import (
	"encoding/base64"
	"net/http"
	"strings"
	"github.com/zenazn/goji/web"
)