Install nodejs script refactored

Before, on install, the script was only looking into "platforms/android/res/values/strings.xml" to add google service app id and key. Now, it also looks into "platforms/android/app/src/main/res/values/strings.xml". Which brings better support for newer cordova android versions.

Now, less exceptions will be silent, bringing more feedback to the user.
With colored output and bold letters for both warnings and errors.

Special thanks for @jringbox, for bringing this support issue.