Update man page.

Document the -E, --encrypt option in manual page.

man/fmail.1.in

@@ -10,6 +10,8 @@ fmail \- mail formatter
 .RB [ \-a | --attach
 .IR file ]
 .RB [ \-s | --sign ]
+.RB [ \-E | --encrypt
+.IR recipient ]
 .RB [ \-e | --edit ]
 .RB [ \-f | --footer
 .IR file ]
@@ -40,7 +42,8 @@ OpenPGP signature; encoding attachments (in
 .I Base64
 or
 .I Quoted-Printable
-depending on their type); adding appropriate mail headers.
+depending on their type); adding appropriate mail headers;
+and encrypting to one or several OpenPGP public keys.
 .PP
 The resulting message is printed on standard output and can
 be piped directly to a program such as
@@ -66,6 +69,10 @@ Attach the specified
 .BR -s ", " --sign
 Sign the message.
 .TP
+.BR -E ", " --encrypt " " \fIrecipient\fR
+Encrypt the message to the public key of
+the specified recipient.
+.TP
 .BR -e ", " --edit
 Fire an editor to type the mail body instead of
 reading it from standard input.