Add placeholder Subversion cheat sheet
Add initial headings, topics
Add first draft command table coparison
Continued draft on migration approaches
Add SVN migration drafts
Update and fix timer, timer toggle control
Increase timer countdown size
Fix typos, grammar
Fix tabs to spaces
Fix tabs to spaces
Revise intro tagline
Add vocabulary table col header clarification
Attempt first-pass vocabulary table descriptions
Tune Git SVN support section title
cleared up some command usage for remote / local

clone is used only once (dont want to confuse people about it being used in place of pull)

push is used to update github from local

use "GitHub" wording in place of remote or central after the firs ttime
Revise command vocabulary descriptions
Expand GitHub Flow lab
Flesh out Contributing with Forks & Pull Requests lab
Flesh out Syncing local and GitHub repos lab
Minor updates to Subversion cheat sheet