Sections internal Architecture docs
Sections internal Architecture docs

Summary: New starter paragraph

Reviewed By: colriot, nicous

Differential Revision: D25612963

fbshipit-source-id: fd777bfa7a998c7277cfbc4225ef91dd0e40c0c3

facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho,facebook/litho