Goname properly formats the names of package level variables and constants according to golang conventions. For example, a variable named "GLOBAL_VARIABLE" will be renamed to "GlobalVariable". This does not modify access levels. Private variables remain private and public variables remain public.
Renaming is implemented via calls to gorename. To install gorename, run
$ go install golang.org/x/tools/cmd/gorename
Make sure gorename exists in your $PATH.
To format the names in a given package, run
$ goname path/to/golang/package
To identify malformed names without renaming, run
$ goname -l path/to/golang/package