remove workspace apps code from getting started tutorial

[benoitlavigne]

Summary

Replacing workspace apps specific code in getting started's tutorial.js with user token code, related to #656
Minor edits to instructions

Requirements (place an x in each [ ])

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.

[codecov]

Codecov Report

Merging #676 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #676   +/-   ##
=======================================
  Coverage   91.92%   91.92%           
=======================================
  Files           7        7           
  Lines         483      483           
  Branches       90       90           
=======================================
  Hits          444      444           
  Misses         22       22           
  Partials       17       17

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[aoberoi]

@benoitlavigne this looks great! thank you for contributing and improving the getting started experience 🥇