Add example to remotes method

Signed-off-by: Stefan Widgren <stefan.widgren@gmail.com>
Add example to remote_add method

Signed-off-by: Stefan Widgren <stefan.widgren@gmail.com>
Add example to remote_rename method

Signed-off-by: Stefan Widgren <stefan.widgren@gmail.com>
Add example to remote_remove method

Signed-off-by: Stefan Widgren <stefan.widgren@gmail.com>
Add example to remote_url method

Signed-off-by: Stefan Widgren <stefan.widgren@gmail.com>