Add README for github

README-dotfiles.md

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+# Dotfiles for Gary Oberbrunner #
+
+This is my dotfiles setup. Managed with [yadm](yadm.io). Everything except emacs config is in here.
+
+# Usage
+
+* Install [yadm](yadm.io) -- it's just a shell script, but it's in homebrew.
+* `yadm clone https://github.com/garyo/dotfiles`
+
+That's it! It will try to run the `bootstrap` file which installs some useful things on a new machine.
+
+With `yadm`, $HOME is a git working dir. The corresponding bare repo is in `$HOME/.local/share/yadm/repo.git`. `yadm` is a thin front end around git, so most git commands work (including all git aliases!), and `yadm` always uses its git repo, so from anywhere `yadm status` will show you which dotfiles are out of date.