Customize the timesync threshold.

Set the timesync threshold to 10 seconds, instead of the default 20 minutes. If the clock gets more than 15 minutes out of sync (due to your laptop going to sleep for instance, then some 3rd party services will reject requests.
Sorry, had tabs.
Merge pull request #115 from dhrrgn/patch-1

Customize the timesync threshold.
Merge branch 'master' into theand

Conflicts:
	Vagrantfile