Updated JavaScript toolchain components to be able to build master

[obilodeau]

Didn't want to go with latest. Went with closest version to make it work.

[obilodeau]

What I don't understand is why is Travis running npm run build fine when I needed to update because locally it failed with this:

$ npm run build

> asciidoctor-reveal.js@1.1.4-dev build /home/olivier/src/asciidoc/asciidoctor-reveal.js
> node npm/build.js

Object freezing is not supported by Opal
Object tainting is not supported by Opal

clean
 - remove build directory

compile
/home/olivier/src/asciidoc/asciidoctor-reveal.js/npm/compiler.js:8
  const opalBuilder = OpalBuilder.create();
                                  ^

TypeError: OpalBuilder.create is not a function
    at Object.module.exports.compile (/home/olivier/src/asciidoc/asciidoctor-reveal.js/npm/compiler.js:8:35)
    at compile (/home/olivier/src/asciidoc/asciidoctor-reveal.js/npm/build.js:17:18)
    at Object.<anonymous> (/home/olivier/src/asciidoc/asciidoctor-reveal.js/npm/build.js:38:1)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
    at startup (internal/bootstrap/node.js:279:19)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! asciidoctor-reveal.js@1.1.4-dev build: `node npm/build.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the asciidoctor-reveal.js@1.1.4-dev build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/olivier/.npm/_logs/2018-11-02T01_30_22_194Z-debug.log

[obilodeau]

Failing tests are unrelated and due to #216

[obilodeau]

This PR is obsoleted by #219 which contained the fix and was merged.