add CDNJS version badge in README.md

[extend1994]

This badge will show the library version on CDNJS!

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[codecov]

Codecov Report

Merging #416 into master will decrease coverage by 7.56%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #416      +/-   ##
==========================================
- Coverage   84.35%   76.79%   -7.57%     
==========================================
  Files          46       46              
  Lines        3663     3663              
  Branches      835      835              
==========================================
- Hits         3090     2813     -277     
- Misses        573      850     +277

Impacted Files	Coverage Δ
src/ParseObject.js	50.67% <0%> (-35.78%)	⬇️
src/ParseOp.js	77.59% <0%> (-4.41%)	⬇️
src/decode.js	96.42% <0%> (-3.58%)	⬇️
src/RESTController.js	81.96% <0%> (-0.82%)	⬇️

---

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[codecov]

Codecov Report

Merging #416 into master will increase coverage by 1.8%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master     #416     +/-   ##
=========================================
+ Coverage   84.35%   86.16%   +1.8%     
=========================================
  Files          46       46             
  Lines        3663     3968    +305     
  Branches      835      893     +58     
=========================================
+ Hits         3090     3419    +329     
+ Misses        573      549     -24

Impacted Files	Coverage Δ
src/ParseError.js	100% <0%> (ø)	⬆️
src/ParseQuery.js	95.89% <0%> (+1.31%)	⬆️
src/LiveQueryClient.js	86.95% <0%> (+1.86%)	⬆️
src/ParseLiveQuery.js	79.51% <0%> (+37.41%)	⬆️

---

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 2956dec...5caf45c. Read the comment docs.

[flovilmart]

Re-triggered the build by closing/reopening