Exposing serverspec type name

We have a use case for reading this attribute and I would rather not parse it out of the `to_s` response
Merge pull request #493 from tyler-ball/patch-1

Exposing serverspec type name
Bump up version
Set os in examples per instructions

Fixes the issue reported at http://stackoverflow.com/questions/26875234/first-should-be-installed-in-test-always-fails-on-windows
Merge pull request #494 from sworisbreathing/fix-windows-documentation

Set os in Windows readme examples
fix typo
Merge pull request #495 from aschmidt75/master

fix typo
Bump up version