Move vim settings out of plugins to ensure they all get correctly loaded after everything else [Fix #373]

vim/settings/README.md

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+This directory contains settings for various vim plugins and vim itself.
+
+## Plugin Settings
+
+Each plugin's overrides/settings should be put in a separate file named `{plugin-name}.vim`.
+
+## Vim Settings
+
+General vim overrides/settings should be put in a separate file named `yadr-{descriptive-name}.vim`.