Splitting up docs

doc/vim/keymaps.md

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+The files in `vim/settings` are customizations stored on a per-plugin
+basis. The main keymap is available in skwp-keymap.vim, but some of the vim
+files contain key mappings as well.
+
+If you are having unexpected behavior, wondering why a particular key works the way it does,
+use: `:map [keycombo]` (e.g. `:map <C-\>`) to see what the key is mapped to. For bonus points, you can see where the mapping was set by using `:verbose map [keycombo]`.
+If you omit the key combo, you'll get a list of all the maps. You can do the same thing with nmap, imap, vmap, etc.