update README

README.md

@@ -1,21 +1,26 @@
-# Bulk image metadata setter
+# Bulk image Exif metadata
 
 Add date to image metadata when missing.
 
 Date parsed from file name.
 
 ```bash
-Usage: set_date_image_metadata <PATH>
+Add date to image Exif metadata when missing
+
+Usage: set_date_image_metadata [OPTIONS] <PATH>
 
 Arguments:
-  <PATH>  The path to the file to read
+  <PATH>  The path to the base directory
 
 Options:
-  -h, --help  Print help
+  -v, --verbose...  Increase logging verbosity
+  -q, --quiet...    Decrease logging verbosity
+  -h, --help        Print help
 ```
 
-Display the last modification time of FILE
+Display Exif metadata
 
 ```
-date -r <filename> "+%d-%m-%Y %H:%M:%S"
+sudo apt install exif
+exif picture.jpg
 ```

src/main.rs

@@ -5,13 +5,13 @@ mod datetime_tag_parser;
 mod datetime_tag_writer;
 mod stats;
 
-/// Search for a pattern in a file and change modification time from the filename
+/// Add date to image Exif metadata when missing.
 #[derive(Parser)]
 struct Cli {
     #[command(flatten)]
     verbose: clap_verbosity_flag::Verbosity,
 
-    /// The path to the file to read
+    /// The path to the base directory
     path: std::path::PathBuf,
 }