Update README

README.md

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 # mustreveal
-Tool for reveal (decrypt) obscured rclone configuration.
+A tool to reveal (decrypt) obscured rclone configuration.
+
+By default, in the rclone config file, human-readable passwords are obscured.
+Obscuring them is done by encrypting them and writing them out in base64.
+
+But rclone does not include command for reveal (decrypt) obscured configuration.
+If you need to view obscured passwords, there is no simple option available.
+
+The mustreveal tool allows you to easily navigate thru configuration and view the obscured passwords.
+
+Please note: This tool is not intended to decrypt config files encrypted using `rclone config encryption` command.