Modern Timeline update (aka FlatList support)

[Johan-dutoit]

I needed a FlatList version of this great repo (thanks @thegamenicorus).
I was going to create a fork and then merge in, but unfortunately this repo has been dormant for ~7months.

For that reason, I've created a new repo called react-native-timeline-feed, which is entirely based off this repo with the exception of using a FlatList instead (and other things like flow).

I'll also be going through the issues listed here and see if they apply (and potentially fix) on the new repo.

Cheers!

[ahmedjamshedlead]

Thanks for your work