Update usage command
update message syntax

Signed-off-by: Édouard Lopez <elopez@ajlsm.com>
neutralize app comments

Signed-off-by: Édouard Lopez <elopez@ajlsm.com>
clarify/simplify outptut

Signed-off-by: Édouard Lopez <elopez@ajlsm.com>
truncate URL to display

Signed-off-by: Édouard Lopez <elopez@ajlsm.com>