minor typo
Added the GoDoc link to README.md.
Updated README.md to show all services.
Update pkg/build/images.go to use the latest version of CouchDB if
`couchdb` was set to `services`.
Merge pull request #79 from yosssi/services

Updated README.md to show all services.
Merge pull request #78 from yosssi/godoc

Added the GoDoc link to README.md.
Merge pull request #72 from schvin/minor-typo

minor typo