install polyfill & runtime to dependency instead of devDependency [skip ci]

[itsnotrisky]

as per doc:

• https://babeljs.io/docs/en/next/babel-polyfill.html#installation
• https://babeljs.io/docs/en/next/babel-runtime.html#usage

Q	A
Fixed Issues?	No
Patch: Bug Fix?	No
Major: Breaking Change?	No
Minor: New Feature?	No
Tests Added + Pass?	Yes
Documentation PR Link
Any Dependency Changes?	No
License	MIT

[babel-bot]

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/9907/

[babel-bot]

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/9906/

[nicolo-ribaudo]

Thank you!

[existentialism]

Note, we'll lose these changes if https://github.com/babel/babel/blob/master/scripts/generators/readmes.js ever gets run again.

[nicolo-ribaudo]

Oh right, it needs to be special-cased in that script

[itsnotrisky]

Thanks for mentioning the script, sorry did not realize one exists!

I'll try to play around with the script see what I can come up with. It's just got a long weekend down here.

[itsnotrisky]

Managed to update the script so that it will print npm install --save package and yarn add package for @babel/polyfill and @babel/runtime.

Also found @babel/helper-create-class-features-plugin was written as @babel/plugin-class-features think that might be a typo?

[nicolo-ribaudo]

Also found @babel/helper-create-class-features-plugin was written as @babel/plugin-class-features think that might be a typo?

Yeah, it was the old name.

[existentialism]

@spondbob thanks!