Add setup.md

[cdrage]

Adds setup.md to the docs folder in order to sync with changes to
http://kompose.io site (whenever we update setup.md here, it'll update
on the gh-pages branch).

[kadel]

This is creating duplication with README.md 😏
How we are going to keep those in sync?

[cdrage]

@kadel Yup, it's a duplication of README.md which is edited when we do a release (version change).

The doc syncs with the setup.md in gh-pages as well.

Yes, we need to update README.md to reflect the new doc.

[kadel]

I meant how we are going to keep setup.md and readme in sync.

Its going to be hard to maintain install instruction in two places :-(
We are already bad in keeping docs up to date and remembering it to edit it in two places will just add to it :-(

[kadel]

It is better to have install instruction in readme, but rather that having it in two places we could just link to setup.md from readme

[cdrage]

@kadel Yup, that's what I meant. In the README.md we'll have our recommend way (installation via binary), in the docs section, we'll have the elaborate way (CentOS, Fedora, etc.) as we get more packaging and other installation methods added.

[cdrage]

@kadel Ready for review, I ended up re-working the installation methods on our README.md to emphasize binary installation as well as have the setup.md document list all of our installation methods (much cleaner than our current README)

[kadel]

just one small nitpick 👼
it would be nice to link to specific section in setup.md

[kadel]

/docs/setup.md#go

[kadel]

/docs/setup.md#centos

[kadel]

/docs/setup.md#fedora

[kadel]

/docs/setup.md#mac-os-x

[cdrage]

@kadel updated!