moves stuff around so its not a disaster in the root

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

@@ -0,0 +1,13 @@
+# The Silver Searcher
+
+This plugin provides completion support for [`ag`](https://github.com/ggreer/the_silver_searcher).
+
+To use it, add ag to the plugins array in your zshrc file.
+
+```zsh
+plugins=(... ag)
+```
+
+## INSTALLATION NOTES
+
+Besides oh-my-zsh, `ag` needs to be installed by following these steps: https://github.com/ggreer/the_silver_searcher#installing.