GOPATH is confusing - can we clarify in tutorials a little?

[bketelsen]

so I think I have some sort of new error or at least I can’t find it
[9:04 PM]
I’m just following the tutorial from goa.design
new messages
[9:08 PM]
I create the directory for my code under $GOPATH/src/cellar
I cd into that directory
I put the example code under design/design.go
when I run goagen bootstrap -d design/design.go , I get the error:

/Users/jeremywhite/Code/go/src/design/design does not contain the design/design Go package

Now I know all I need to do is change this command to goadesign bootstrap -d cellar/design and all is well… but this would confuse a newbie.
[9:08 PM]
so I think that might need a tweak in the docs, but maybe someone already saw this? it seems like an easy thing to find… so wanted other folks thoughts