Update README.md for the data capture codelab

[jingtang10]

IMPORTANT: All PRs must be linked to an issue (except for extremely trivial and straightforward changes).

Description
Update README.md for the data capture codelab

Alternative(s) considered
NA

Type
Documentation

Screenshots (if applicable)

Checklist

• I have read and acknowledged the Code of conduct.
• I have read the Contributing page.
• I have signed the Google Individual CLA, or I am covered by my company's Corporate CLA.
• I have discussed my proposed solution with code owners in the linked issue(s) and we have agreed upon the general approach.
• I have run ./gradlew spotlessApply and ./gradlew spotlessCheck to check my code follows the style guide of this project.
• I have run ./gradlew check and ./gradlew connectedCheck to test my changes locally.
• I have built and run the demo app(s) to verify my change fixes the issue and/or does not break the demo app(s).

[jingtang10]

@williamito @omarismail94

[omarismail94]

This reads really well!

[codecov]

Codecov Report

Merging #1436 (846fba3) into master (6782042) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1436   +/-   ##
=========================================
  Coverage     85.68%   85.68%           
  Complexity      716      716           
=========================================
  Files           149      149           
  Lines         10768    10768           
  Branches        860      860           
=========================================
  Hits           9227     9227           
  Misses         1100     1100           
  Partials        441      441           

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[jingtang10]

Thanks both @omarismail94 and @williamito - ptal!

[williamito]

LGTM.
Apologies for the CLA error, I had the wrong default email address set for web-based edits and I don't think there's a way for me to fix it after the fact. You will probably need to request an override, or let me know how I can help.

[jingtang10]

@williamito this should be fixable - can you try following the details of the failed check, it'll lead you to a page with a link to sign the cla using your personal email. thanks!

[jingtang10]

@williamito this should be fixable - can you try following the details of the failed check, it'll lead you to a page with a link to sign the cla using your personal email. thanks!

[omarismail94]

Thanks for the changes @jingtang10 ! Had more time today to look in more detail and left a few more comments :)

[jingtang10]

@omarismail94 by the way this is all @williamito 's work. he did all the writing. all credits to him.