Update Readme with latest usage details

Author: deepjyoti30

README.md

@@ -157,9 +157,9 @@ You can manually install `ytmdl` by cloning this repository and running the `set
 ## Usage
 
 ```console
-usage: ytmdl [-h] [-q] [-o SONG-DIR] [--song SONG-METADATA] [--choice CHOICE]
-             [--artist ARTIST] [--album ALBUM] [--disable-metaadd]
-             [--skip-meta] [-m] [--itunes-id ITUNES_ID]
+usage: ytmdl [-h] [-q] [-o OUTPUT_DIR] [--song SONG-METADATA]
+             [--choice CHOICE] [--artist ARTIST] [--album ALBUM]
+             [--disable-metaadd] [--skip-meta] [-m] [--itunes-id ITUNES_ID]
              [--spotify-id SPOTIFY_ID] [--disable-sort] [--ask-meta-name]
              [--on-meta-error ON_META_ERROR] [--proxy URL] [--url URL]
              [--list PATH TO LIST] [--nolocal] [--format FORMAT] [--trim]
@@ -178,9 +178,10 @@ optional arguments:
   -q, --quiet           Don't ask the user to select songs if more than one
                         search result. The first result in each case will be
                         considered.
-  -o, --output          The location for the song to be downloaded
-                        to. When no argument is passed, the default locations
-                        of SONG_DIR or XDG_MUSIC_DIR are used.
+  -o OUTPUT_DIR, --output-dir OUTPUT_DIR
+                        The location for the song to be downloaded to. When no
+                        argument is passed, the default locations of SONG_DIR
+                        or XDG_MUSIC_DIR are used.
   --proxy URL           Use the specified HTTP/HTTPS/SOCKS proxy. To enable
                         SOCKS proxy, specify a proper scheme. For example
                         socks5://127.0.0.1:1080/. Pass in an empty string