Added browser shim for process

[sclausen]

As requested in #804, here is a browser shim for process, which is needed to use mqtt.js with angular-cli >= 6.0.0, since they removed the node-shims.

[codecov]

Codecov Report

Merging #808 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #808   +/-   ##
=======================================
  Coverage   93.75%   93.75%           
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  Files           8        8           
  Lines         737      737           
  Branches      183      183           
=======================================
  Hits          691      691           
  Misses         46       46

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[RangerMauve]

Wouldn't it be better to have node-shims included in the build? Would this be defining the process global that's needed by the code?

[sclausen]

No, this crap doesn't work at all. It seems I have to learn more about to shim things ;)

[RangerMauve]

Yeah, it's pretty finicky stuff. That's why I stick to browserify a lot these days.

[RangerMauve]

Speaking of which, if you're in a rush and having trouble, you could turn mqtt.js into a browserified bundle and import that in your angular app.

[sclausen]

Unfortunately, it's a library and I have no clue, how to embed a js-file in this bleeding edge angular-cli lib project.