Install Overmind for Linux

Overmind works with tmux, so you need to install it first:

sudo apt-get install tmux

See the list of recent releases and pick the latest one.

Install it to /usr/local/bin:

1. Download linux-amd64.gz (e.g. overmind-v2.2.0-linux-amd64.gz)
2. Decompile the gzip file (gunzip < overmind-v2.2.0-linux-amd64.gz > overmind)
3. Move it to /usr/local/bin
4. Make it executable: chmod +x /usr/local/bin/overmind