sync jest dir from nuclide repo

[aaronabramov]

No description provided.

[aaronabramov]

@hansonw it seems like the license header rule is inconsistent between nuclide and atom-ide repos :(

[aaronabramov]

ugh.. seems like this file wasn't prettified before

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@029184e). Click here to learn what that means.
The diff coverage is 0%.

@@            Coverage Diff            @@
##             master     #273   +/-   ##
=========================================
  Coverage          ?   13.12%           
=========================================
  Files             ?      312           
  Lines             ?    11287           
  Branches          ?        0           
=========================================
  Hits              ?     1481           
  Misses            ?     9806           
  Partials          ?        0

Impacted Files	Coverage Δ
jest/setupTestFrameworkScriptFile.atom.js	0% <0%> (ø)
jest/setup.js	0% <0%> (ø)
jest/__mocks__/log4js.js	0% <0%> (ø)
jest/__mocks__/emptyObject.js	0% <0%> (ø)
jest/setupTestFrameworkScriptFile.node.js	0% <0%> (ø)
jest/__mocks__/nuclide-commons/analytics.js	0% <0%> (ø)
jest/waits_for.js	0% <0%> (ø)

---

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 029184e...589289d. Read the comment docs.

[visutnam1]