update doc

Author: nxadm

README.md

@@ -18,13 +18,13 @@ that consumes many of the functionalities of the library:
 
 ```
 $ ./certmin
-certmin, 0.5.5. A minimalist certificate utility.
+certmin, 0.5.6. A minimalist certificate utility.
 See https://github.com/nxadm/certmin for more information.
 
 Usage:
   certmin skim cert-location1 [cert-location2...] 
     [--leaf|--follow] [--no-roots]
-    [--sort|--rsort] [--keep] [--no-colour]
+    [--sort|--rsort] [--once] [--keep] [--no-colour]
   certmin verify-chain cert-location [cert-location2...]
     [--root=ca-file1 --root=ca-file2...]
     [--inter=inter-file1 --inter=inter-file2...]
@@ -55,6 +55,10 @@ Global options (optional):
   --inter     | -i  : intermediate certificate file(s).
   --sort      | -s  : sort the certificates and chains from leaf to root.
   --rsort     | -z  : sort the certificates and chains from root to leaf.
+  --once      | -o  : if within a location several certificates share an
+                      intermediate/root, don't show certificates more than
+                      once to visually complete the chain. If "rsort" not
+                      given it enables "sort".  
   --keep      | -k  : write the requested certificates and chains to files
                       as PKCS1 PEM files (converting if necessary). 
   --no-colour | -c  : don't colourise the output.

cmd/certmin/README.md

@@ -30,7 +30,7 @@ go get github.com/nxadm/certmin/cmd/certmin
 
 ```
 $ ./certmin
-certmin, 0.5.5. A minimalist certificate utility.
+certmin, 0.5.6. A minimalist certificate utility.
 See https://github.com/nxadm/certmin for more information.
 
 Usage:

cmd/certmin/main.go

@@ -9,7 +9,7 @@ import (
 )
 
 const (
-	version = "0.5.5"
+	version = "0.5.6"
 	website = "https://github.com/nxadm/certmin"
 	timeOut = 5 * time.Second
 )