Adding Omnivore.app as a Sharing site.

[tdmarchetta]

I cannot thank you enough for making this project. I have been looking for something like this for a long time!!

Is your feature request related to a problem? Please describe.
Would it be possible to add https://omnivore.app as a sharing site to save articles to read later.

Describe the solution you'd like
To add omnivore as an option under these sharing site lists.

[AaronKnowls]

I'd love this too.