Add recursive chown to IFileSystem.

Needed to fix http://teampulse.telerik.com/view#item/277393 - Support Node.js installed with sudo on Mac and Linux
Merge pull request #98 from telerik/totev/sudo

Add recursive chown to IFileSystem
Change setting of profile-dir

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.