moves stuff around so its not a disaster in the root

configs/zsh/ohmyzsh/plugins/gas/README.md

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+# Gas plugin
+
+This plugin adds autocompletion for the [gas](http://walle.github.com/gas) command,
+a utility to manage Git authors.
+
+To use it, add `gas` to the plugins array of your zshrc file:
+
+```zsh
+plugins=(... gas)
+```