Add Installation instructions

[netbe]

Hi,

I remember reading about this set of tools a while ago and now that I use more and more Storyboards, I wanted to set this up and was hopping for a installation paragraph in the README. Hopefully it will help others.

Note 1: Could also simplify it and add the move binaries directly into the scheme if needed and path correct (/usr/local/bin). Note 2: what about a one liner script like a install.sh via curl downloading a binaries contained in Github releases?