Update 09-ruby.md
Update 10-javascript.md
update vagrant links
update introduction
update whatisdevenv
use vagrant in terminal chapter
cleanup
DevEnvs -> dev-envs
update editors chapter
add resources to git chapter
update setup chapter
update javascript import/require section
add to npm scripts section of js chapter
cleanup
add nodeshool links
update ruby & python build tool sections
update book.md
update book.md
cleanup
remove ejs typo from ruby chapter