Appveyor script for both Windows and Linux using Node 8 LTS and Node 10 LTS

[LSBOSS]

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  This PR adds support for building Kalimdor.JS via Appveyor for both Windows and Linux.

• What is the current behavior? (You can also link to an open issue here)
  Kalimdor.JS is currently build via Travis for Linux only.
  See Issue here: Investigate using Appveyor for CI instead of Travis #87

• What is the new behavior (if this is a feature change)?
  Building and testing via Appveyor

• Other information:

• In order to enable your build for Appveyor, you need an Appveyor account and add Kalimdor.JS as project. Then it will run on commits on every branch.
• After adding Kalimdor.JS to Appveyor you'll find the URLs for the building badges to be included in README.md under Projects --> kalimdorjs --> Settings --> Badges
• Building the docker image during integration test is disabled for Windows for now because by default Docker for Windows which is pre-installed on Apveyor's machines is only accepting Windows container.

[JasonShin]

This is perfect @LSBOSS, thank you so much! I will make sure to include the Appveyor badge soon

[JasonShin]

I'm not sure why other checks are still in Waiting for status to be reported status; I've already removed Codacy and DeepScan..

[JasonShin]

I will also merge this into V2 branch