add option to fetch open incidents on startup

[aberfeldy]

I'm using this nice tool (thx for the work on it) in a docker environment on a cluster, so things can happen and it needs to be restarted somewhere else. But if an incident was opened before it got killed, cachet-monitor is not able to resolve it, if the monitor is up and saturated again. This little function allows it to prefetch an open incident after restart and before start pinging again. Maybe it's something you want to include as well.

[paramaathma]

Could someone please guide me how to generate binary file from this code base. because I want this code changes but not able to generate executable binary file. I want a binary file with this current change. binary file should be like how we download from release page.

Please someone help in this.

Thanks in advance.