was symlinking /zrepl to /go/src/github.com/zrepl/zrepl earlier, forgot
to change that apparently
see 47726ad877336211ed35cfc06f25ca4b9b24fa41
refs #38
Didn't notice it because vendor/ was already populated on my dev
machine, but did notice it in Docker build.
Docker build now consumes devsetup like regular user, so this should
catch future problems.
Remove remaining curl|shit functionality from lazy.sh (no checkout logic
needed anymore).
refs #35
* Idempotent clone_and_build.sh does everything
* Add documentation for how to build in Docker
Had to sacrificy go generate because stringer apparently can't handle
vendor directory used by go dep, fails with error
on go generate rpc/frame_layer.go
refs #37
