torrent/builder.go | 3 +++

diff --git a/torrent/builder.go b/torrent/builder.go
index 95ed88168e0086d6417f375c8053038243360ef9..6dd6eb6b8dfad967009f4d188b4ed4b0b69d9b58 100644
--- a/torrent/builder.go
+++ b/torrent/builder.go
@@ -12,6 +12,9 @@ 	"io"
 	"os"
 )
 
+// The Builder type is responsible for .torrent files construction. Just
+// instantiate it, call necessary methods and then call the .Build method. While
+// waiting for completion you can use 'status' channel to get status reports.
 type Builder struct {
 	filesmap      map[string]bool
 	files         []file