Update the ways things are installed

Put vim's swp files into a separate dir so that they don't end up in the
git repo.

Link all files and directories explicitly to avoid accidentally linking
stuff like .gitignore.

Handle .ssh/config specially, because it does not live at the top level.

.vimrc

@@ -100,7 +100,7 @@ set showcmd
 syntax on
 
 " Keep all those pesky .swp files in one place.
-set directory=~/.vim/tmp,~/tmp,/var/tmp,/tmp
+set directory=~/.vimtmp,~/tmp,/var/tmp,/tmp
 
 " Only use one space between sentences when joining lines or
 " reformatting paragraphs.

install.sh

@@ -1,7 +1,8 @@
 #!/bin/sh
 
 # First, make sure all the submodules are checked out
-git submodule update --init --recursive
+# TODO: Delete this if no longer needed.
+#git submodule update --init --recursive
 
 link() {
     src="$1"
@@ -23,25 +24,19 @@ link() {
     fi
 }
 
-# dot files (not directories)
-for i in .*
-do
-    if [ ! -d "$i" ]
-    then
-        link "$PWD/$i" "$HOME/$i"
-    fi
-done
+SSH_DIR="$HOME/.ssh"
 
-# dot directories
+# required directories
+mkdir -p "$SSH_DIR"
+mkdir -p "$HOME/.nvm"
+mkdir -p "$HOME/.vimtmp"
+
+# dot files and directories
 # by inclusion, so things like '..' and '.git' don't get in there accidentally
-for i in .vim
+for i in .vim .vimrc .zshrc
 do
-    [ -d "$i" ] && link "$PWD/$i" "$HOME/$i"
+    link "$PWD/$i" "$HOME/$i"
 done
 
-# special cases
-SSH_DIR="$HOME/.ssh"
-mkdir -p "$SSH_DIR"
-link .ssh/config "${SSH_DIR}/config"
-
-mkdir -p "$HOME/.vim/tmp/"
+# files not at the top level
+link "${PWD}/.ssh/config" "${SSH_DIR}/config"