Create npm release

[barillax]

It would be great if arabic-mathjax was accessible as an NPM module.

Example MathJax extension that's already published to NPM:

• https://github.com/mhchem/MathJax-mhchem

More details about publishing NPM modules:

• https://hackernoon.com/how-to-publish-your-package-on-npm-7fc1f5aae600
• https://docs.npmjs.com/packages-and-modules/contributing-packages-to-the-registry

[barillax]

This is done! Closing the issue.