Update README.md

Updated link
Update README.md

Changed the next steps
Update README.md

Corrected link to projects.svanevik.me/most-frequent-words
Merge branch 'experiment-impressjs' of github.com:askeluv/most-frequent-words into experiment-impressjs
Commit before moving onto Anita's branch
Removed data files from repo
Revert "Removed data files from repo"

This reverts commit d91d47fed2905b8e3383f8696c757b927db40eae.