chore: update readme and renormalize on init

Signed-off-by: jolheiser <john.olheiser@gmail.com>

README.md

@@ -10,7 +10,7 @@ Echoed from the original project:
 > 
 > The one use-case where it makes sense to use `git-age` instead is when you want to keep some files secret on a (potentially public) git remote, but you need to have the plaintext in the local working tree because you cannot hook into the above tools for your workflow. **Being lazy is not an excuse to use this software.**
 
-## Install
+## Adding git-age to a new repository
 
 1. Install `git-age` in your `PATH`
 2. `git age init`
@@ -18,7 +18,9 @@ Echoed from the original project:
   - `git age ident key.txt`
   - `git age ident ssh`
 4. Set up your config ([example](.git-age.yaml))
-5. Use git like normal.
+5. Add your secrets to `.gitattributes`
+  `secret.txt diff=git-age filter=git-age`
+6. Use git like normal.
 
 ## Decrypting an existing repository
 

cmd/init.go

@@ -2,7 +2,9 @@ package cmd
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
+	"io/fs"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -41,6 +43,9 @@ func actionInit(ctx *cli.Context) error {
 
 	cfg, err := LoadConfig()
 	if err != nil {
+		if errors.Is(err, fs.ErrNotExist) {
+			return nil
+		}
 		return err
 	}
 	dir, err := gitBaseDir()
@@ -61,13 +66,13 @@ func actionInit(ctx *cli.Context) error {
 			}
 
 			var buf bytes.Buffer
-			cmd := exec.Command(exe, args...)
+			c := exec.Command(exe, args...)
-			cmd.Stdin = bytes.NewReader(content)
+			c.Stdin = bytes.NewReader(content)
-			cmd.Stdout = &buf
+			c.Stdout = &buf
 			if debug {
-				cmd.Stderr = os.Stderr
+				c.Stderr = os.Stderr
 			}
-			if err := cmd.Run(); err != nil {
+			if err := c.Run(); err != nil {
 				if debug {
 					fmt.Fprintf(os.Stderr, "could not smudge file: %v\n", err)
 				}
@@ -78,8 +83,11 @@ func actionInit(ctx *cli.Context) error {
 			if err != nil {
 				return err
 			}
-			defer fi.Close()
 			fi.Write(buf.Bytes())
+			if err := fi.Close(); err != nil {
+				return err
+			}
+			cmd("git", "add", "--renormalize", apn)
 
 			return nil
 		}(); err != nil {