Config: Discoverable from other drives in Windows

In Windows, when the project resides in drive other than the one with user profile directory, TsLint (just [like JsHint](https://github.com/jshint/jshint/pull/1620)) doesn't resolve the correct home path.

Details can be found here: https://github.com/jshint/jshint/issues/1574 and https://github.com/madskristensen/WebEssentials2013/issues/878