Add preliminary fish config.

Makefile

@@ -7,3 +7,4 @@ install: dotfiles
 	install -m 0644 bash_profile $(prefix)/.bash_profile
 	install -m 0644 bashrc $(prefix)/.bashrc
 	install -m 0644 zshenv $(prefix)/.zshenv
+	install -m 0644 config/fish/config.fish $(prefix)/.config/fish/config.fish

config/fish/config.fish

+function fish_prompt
+	echo
+	set_color normal
+	set_color --bold
+	echo -ns "$USER"
+	set_color normal
+	echo -ns '@' (hostname -f) ':'
+	set_color --bold --background blue white
+	echo -ns (pwd)
+	set_color normal
+	echo
+	echo -ns "> "
+end
+
+set fish_color_param normal
+set fish_color_error normal
+set fish_color_command normal\x1e\x2d\x2dbold