Setup script issues

[vchimev]

• the script installs nodejs version 5.1.0. It would be the best to install nodejs LTS version.
• the script fails to install android build tools.
  Output: Error: Ignoring unknown package filter 'build-tools-23.0.2'
• the command npm install -g nativescript fails due to npm not found.

[vchimev]

Everything was successfully installed, but the setup script failed with a write error.

Log: https://gist.github.com/vchimev/e90a0f9a3ab1f7aa54a4

Screenshot:

[vchimev]

If I have already installed node.js it is not detected. The script tries to install it again and fails.

Log: https://gist.github.com/vchimev/d8168ded51d192f7416c

Screenshot:

[vchimev]

If I have already installed jdk and android sdk they are not detected. The script installs them again.

Log: https://gist.github.com/vchimev/c3381a754fb059596e1c

Screenshot:

[vchimev]

The NPM warnings of the NativeScript CLI installation are colored in red, they can be mistaken for errors and make harder to see the real errors if any.

Screenshot:

[teobugslayer]

About the red text, it is beyond my control.
About failing re-installations, I'll fix them.
About the first reported fail, I cannot reproduce it. I'll try couple more times.