added heartbeater

Signed-off-by: Zach Robinson <zrobinson@pivotallabs.com>
godeps

Signed-off-by: Zach Robinson <zrobinson@pivotallabs.com>
improve loggin

Signed-off-by: Zach Robinson <zrobinson@pivotallabs.com>
heartbeat on startup

Signed-off-by: Zach Robinson <zrobinson@pivotallabs.com>