Add dotfiles from home directory

Tracks shell configs (zsh/bash), vim, tmux, irssi, fonts, themes,
and ~/.local/bin scripts. Sensitive files (.ssh, .gnupg, history,
credentials) and large app data are excluded via .gitignore.

.zlogout.backup

@@ -0,0 +1,14 @@
+#
+# Executes commands at logout.
+#
+# Authors:
+#   Sorin Ionescu <sorin.ionescu@gmail.com>
+#
+
+# Print the message.
+cat <<-EOF
+
+Thank you. Come again!
+  -- Dr. Apu Nahasapeemapetilon
+EOF
+