Fix README.md (#367)
Fix README.md (#367)

Documentation outdated since commit d5a8462a82ef15b151bc7f36c3410973440cecc6
merged under [obvious fix](https://docs.chef.io/community_contributions.html#the-obvious-fix-rule)
opscode-cookbooks/iis,chef-cookbooks/iis,jonathanmorley/iis