update readme

Author: dsa0x

Readme.md

@@ -53,6 +53,14 @@ This will create a key file `{environment}.key` and an encrypted credentials fil
 sicher edit
 ```
 
+OR
+
+to use the key from environment variable:
+
+```shell
+env SICHER_MASTER_KEY=`{YOUR_KEY_HERE}` sicher edit
+```
+
 **_Optional flags:_**
 
 | flag    | description                                     | default | options             |
@@ -105,12 +113,6 @@ The `LoadEnv` function will load the credentials from the encrypted file `{envir
 
 The key also be loaded from the environment variable `SICHER_MASTER_KEY`. In production, storing the key in the environment variable is recommended.
 
-To use the key from environment variable:
-
-```shell
-env SICHER_MASTER_KEY=`{YOUR_KEY_HERE}` sicher edit
-```
-
 All env files should be in the format like the example below:
 
 For `dotenv`:

sicher.go

@@ -202,6 +202,7 @@ func (s *sicher) Edit(editor ...string) error {
 		return fmt.Errorf("error creating temp file %v", err)
 	}
 	defer f.Close()
+	f.Chmod(0600)
 	filePath := f.Name()
 	defer cleanUpFile(filePath)