add: fork repo image

add: new content to edit file lesson

docs: update README.md [skip ci]

docs: update .all-contributorsrc [skip ci]

add: edit lesson

fix: pr page plus screencasts

fix: rename and reorg

add: metadata to core pages

rewrite: social cues added throughout

fix: metadata

fix: add social elements

fix: cleanup and add social context

fix: edits from group review

fix: new landing page - intro

Fix: final edits to lessons

fix: links

add: new content to edit file lesson

docs: update README.md [skip ci]

docs: update .all-contributorsrc [skip ci]

add: edit lesson

fix: pr page plus screencasts

fix: rename and reorg

add: metadata to core pages

rewrite: social cues added throughout

fix: metadata

fix: add social elements

fix: cleanup and add social context

fix: edits from group review

fix: new landing page - intro

Fix: final edits to lessons

fix: links

Author: lwasser