Add filter option

[lifeiscontent]

Being able to filter by a particular repo or organization would be cool. That way companies could host this on a TV in their offices 👍 and use it as a calm way to know there are updates

[OrkoHunter]

Other filter option could be : Language

[debugger22]

@lifeiscontent Great idea! I'll start working on it as soon as I get time.

Other filter option could be : Language

GitHub doesn't sends language info in the endpoint, to get that we'll have to call another endpoint. I'll see to it.