bring back full covers if needed

README.md

@@ -37,12 +37,17 @@ From there on `cargo run` and `cargo build` and so on can be used.
 Usage: little-hesinde [OPTIONS] -- <LIBRARY_PATH>
 
 Arguments:
-  <LIBRARY_PATH>  Calibre library path
+  <LIBRARY_PATH>  Calibre library path [env: LIBRARY_PATH=]
 
 Options:
-  -l, --listen-address <LISTEN_ADDRESS>  Address to listen on [default: [::1]:3000]
-  -h, --help                             Print help
-  -V, --version                          Print version
+  -l, --listen-address <LISTEN_ADDRESS>
+          Address to listen on [env: LISTEN_ADDRESS=] [default: [::1]:3000]
+  -c, --cache-path <CACHE_PATH>
+          Cache path ($TMP cascades through $XDG_CACHE_HOME, $TMPDIR and /tmp) [env: CACHE_PATH=] [default: $TMP/little-hesinde]
+  -h, --help
+          Print help
+  -V, --version
+          Print version
 ```
 
 Example: `little-hesinde -l [::]4000 -- ~/Documents/library/`