Change default profile-dir

Change default profile-dir to be:
 - %localappdata%\.nativescript-cli for Windows
 - ~/.local/share/.nativescript-cli for MacOS and Linux

Update common lib where the following change is applied: DefaultValue is passed to the setProfileDir method. Different CLI-s have different defaultProfileDirs. setProfileDir method will use the passed on the command line profile-dir or the default one passed as parameter to the function.
Merge pull request #148 from NativeScript/vladimirov/fix-cache-folder

Change setting of profile-dir
Fix tabtab for -- options

Add implementation of IOptionsService interface with one method - getKnownOptions. This method is used in commands service in order to get full list of supported -- options. As each CLI have its own list of knownOptions and the mobile lib has only some of them, the implementation of the interface has to be outside of the lib. This way we can use autocomplete for all available options, not only for the common ones.