added the jsonlite dependency and escaped the email and password fields
readded jsonlite, changed the template to avoid generating a libraries directory, delete the relevant .md, .html and libraries directory when using upload_chapter
removed test directory
Merge pull request #3 from Data-Camp/development

merged Development branch with master
added the slides_link
Merge branch 'master' of https://github.com/Data-Camp/datacamp
Update to new upstream/master