fgm/php__symfony__book: FGM's version of the code suggested in the SF4 book. @ f8830b8a4738164091e06ada9f5e6c1e2cfeca3c

Frederic G. MARAND f8830b8a47 Initial commit: generated skeleton + composer require server.		6 éve
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Controller	f8830b8a47 Initial commit: generated skeleton + composer require server.	6 éve
Kernel.php	f8830b8a47 Initial commit: generated skeleton + composer require server.	6 éve