Adding Windows MSI install documentation
Add one more config file edit to MSI install docs
mark service to start delayed auto
More Windows documentation.  Moved some install info from packages.md to installing_sensu.md.  Added a Windows example to adding_a_check.md.
Windows doc additions
check-disk-windows.rb plugin is in the community plugins repo now
Merge pull request #37 from MattMencel/master

New Windows Doc Pull Request