Pencil by Rino 1.0.0 packages the frontend editing workflow as its first stable GitHub release.
Download the attached pencil-by-rino-1.0.0.zip and install it through Plugins → Add Plugin → Upload Plugin. A custom theme built for Pencil is required.
Future stable GitHub releases will appear as normal plugin updates in WordPress. Use Check for updates on Pencil’s Plugins row to request a fresh check.