hook: add few comments
authorJosé Bollo <jose.bollo@iot.bzh>
Fri, 28 Oct 2016 12:42:54 +0000 (14:42 +0200)
committerJosé Bollo <jose.bollo@iot.bzh>
Fri, 28 Oct 2016 12:42:54 +0000 (14:42 +0200)
Change-Id: I453625b70f13a5b01a84b2ac60eb6fb9e0dd0ebd
Signed-off-by: José Bollo <jose.bollo@iot.bzh>

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