chore: regenerate README

[yoshi-automation]

This PR was generated using Autosynth. 🌈

Log from Synthtool

2020-10-16 20:03:33,165 synthtool [DEBUG] > Executing /root/.cache/synthtool/java-workflows/.github/readme/synth.py.
On branch autosynth-readme
nothing to commit, working directory clean
2020-10-16 20:03:34,086 synthtool [DEBUG] > Wrote metadata to .github/readme/synth.metadata/synth.metadata.

Full log will be available here:
https://source.cloud.google.com/results/invocations/c2112be1-17e2-497a-ae91-f863d86c7d6e/targets

• To automatically regenerate this PR, check this box.

[yoshi-approver]

Rubber stamped PR!

[codecov]

Codecov Report

Merging #66 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #66   +/-   ##
=========================================
  Coverage     73.75%   73.75%           
  Complexity       61       61           
=========================================
  Files             6        6           
  Lines           503      503           
  Branches          4        4           
=========================================
  Hits            371      371           
  Misses          124      124           
  Partials          8        8           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update d7c19f6...680381f. Read the comment docs.