Blackfish is not hosted on Github but now on Gitlab
I tried git clone https://github.com/yanndegat/blackfish and did not work. Seems like there is no Github mirror configured. For now I suggest this change so that those who follow README can get what it says.
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fyi, i'm in a huge refactoring of this project.
it will soon be a go binary that outputs a complete terraform project, based on a yml config file. it will integrate the full hashicorp stack ( consul+vault+nomad) in addition to docker 1.12 in swarm mode.