update site to match README

[srl295]

Update _includes/home/secondary.html ? to address issues in git-lfs/git-lfs#3181 and addressed in git-lfs/git-lfs#3193

in the Getting Started section,

• step 1 mentions to install the binaries, but git lfs install isn't an installer. (install.sh is)

• steps 2 and 3 ( git lfs track, git add, push etc) are example usage and not part of the installation.

• It might be good to move step 1 of getting started up near the blue Download button, something such as "once downloaded, git lfs needs to be configured once…

Motivation: In our instructions for example, we are trying to refer to the git-lfs docs as a prereq to doing a git clone. git lfs track for example is not needed before doing a git clone of an lfs-enabled repo.

[ttaylorr]

Update `_includes/home/secondary.html` ? to address issues in git-lfs/git-lfs#3181 and addressed in git-lfs/git-lfs#3193

Sure, that sounds like a good approach to me. Let's close this issue and turn those proposed changes into a pull request instead.

[srl295]

@ttaylorr I'm not going to be able to make a PR in the near future, so wanted to capture this. but however you want to handle.