Added b2g-inbound support.
ex:
{
  "account": "",
  "password": "",
  "download_home": "inbound",
  "base_url": "https://pvtbuilds.mozilla.org/pvt/mozilla.org/b2gotoro/tinderbox-builds/",
  "build_id_format": "/{year}{month}{day}{hour}{min}{sec}/"
}
Merge remote-tracking branch 'mozilla/master' into tinderbox-buildid-support

Conflicts:
	utilities/arg_parse.py
Added flash_tbpl.py for tinderbox builds
Merge pull request #231 from askeing/tinderbox-buildid-support

Added flash_tbpl.py to support tinderbox builds.
Merge pull request #238 from askeing/master

Wait for device before running adb root [shallow_flash.sh].