added 'fixtureOutputExt' configuration option

[CzBuCHi]

details can be found in issue #72

---

ps: i was forced to commit via git commit -no-verify because otherwise im getting this error:

c:\projects\github\babel-plugin-tester>git commit
husky > pre-commit (node v12.16.3)
sh: C:projectsgithubbabel-plugin-testernode_modules.binkcd-scripts.CMD: command not found
husky > pre-commit hook failed (add --no-verify to bypass)

(im guessing, that something is stripping \ from path and also i dont have file
C:\projects\github\babel-plugin-tester\node_modules\.binkcd-scripts.CMD on my pc even after deleting node_modules and caling npm install again ... , also i have no idea what husky is ...)

OS: windows 10 v 1909 build 18363.836
npm -v: 6.14.4
node -v: v12.16.3

[codecov-commenter]

Codecov Report

Merging #73 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #73   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          157       160    +3     
  Branches        37        38    +1     
=========================================
+ Hits           157       160    +3     

Impacted Files	Coverage Δ
src/plugin-tester.js	100.00% <100.00%> (ø)

---

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[kentcdodds]

Cool! Could we get docs as well?

[CzBuCHi]

Sure thing....

PS: english isn`t my first language, so please check for wierdness and typos ...

[kentcdodds]

Super 👍 thanks!

[kentcdodds]

@all-contributors please add @CzBuCHi for code, tests, and docs

[allcontributors]

@kentcdodds

I've put up a pull request to add @CzBuCHi! 🎉

[kentcdodds]

🎉 This PR is included in version 9.2.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀