Add demo & fix docs

Signed-off-by: Hadi <[email protected]>

README.md

@@ -70,7 +70,7 @@ Flags:
   -v, --version              version for default-creds-tui
 ```
 
-Credentials come from one of three sources, controlled by `--mode` (or `app.mode` in the config file):
+Credentials come from two sources, controlled by `--mode`:
 
 - `local`: reads YAML files from `~/.cache/default-creds/data` (e.g. a `git clone` of
   [default-creds](https://github.com/anotherhadi/default-creds) into `~/.cache/default-creds`).
@@ -90,10 +90,6 @@ default-creds-tui --search "d-link"
 default-creds-tui --search "cisco" --no-colors
 ```
 
-`--print` (or `app.print_on_enter: true` in the config) turns enter itself into a picker: it prints
-the selected result to stdout and exits with status 0, instead of copying the password. Regardless
-of that setting, `P` always prints the selected result and quits.
-
 ---
 
 <div align="center">