make validate fail with missing dependency

[jeanlaurent]

> make validate
0 adds, 0 deletions; nothing to validate! :)
mk/validate.mk:21: *** Please install golint: go get -u github.com/golang/lint/golint.  Stop.

[dgageot]

@jeanlaurent Then you should install golint ;-)

[jeanlaurent]

@dgageot couldn't find this myself 😄 , I quickly noted this not to forget about it.

This has to be handled automagically or noted in the CONTRIBUTING.md

[nathanleclaire]

This has to be handled automagically

No

noted in the CONTRIBUTING.md

Yes