Delete all-gems directory.
Added 100-empty-serve-app
Started empty serve app in 101.
Added cd, edit, and ls pages to 101.
Added exercise 102.
Added plain-text version of mockups to 102.
Added empty project_ideas.txt
Added directory 200-empty-sinatra-app.
Added assignment 103-rubyonrails-org.
delete edit
changed cd name to test