appveyor.yml updates (4.5.x)

- add Node.js versions 8 & 10
- do normal npm install (workaround for uncrustify no longer needed)

appveyor.yml

@@ -2,14 +2,12 @@ environment:
  matrix:
  - nodejs_version: "4"
  - nodejs_version: "6"
+ - nodejs_version: "8"
+ - nodejs_version: "10"
 
 install:
  - ps: Install-Product node $env:nodejs_version
- # Lines below required due to uncrustify installation failure on Windows
- - npm install --prod
- - npm install eslint eslint-config-semistandard jasmine rewire
- - npm install eslint-config-standard eslint-plugin-import eslint-plugin-node
- - npm install eslint-plugin-promise eslint-plugin-standard
+ - npm install
 
 build: off