Some clarification about ./UltiSnips vs ./snippets

[paranormal]

• Currently all snippets from UltiSnips have been put into UltiSnips - some work on merging should be done (dropping duplicates etc). Also see engines section above.

This part is unclear for me.

Merging to what destination? Is preferred format Ultisnip or snipmate?

[lpil]

The snipmate format is the preferred format as it can be read by most engines.

If you'd like to clarify that section please send a PR :)

[polyzen]

Referencing #363.