export GOPATH=~/Projects/go
Also works better on Windows where .path is not hidden
Also it seems Rob Pike one of the creators of Go and involved with early UNIX thinks that . making hidden files was a mistake. Quote via XahLee http://xahlee.info/UnixResource_dir/writ/unix_origin_of_dot_... - original was Google+ so not existing now.
They had a kb shortcut for it