Add dulcie theme as a basic PS1 prompt with git info

themes/dulcie/dulcie.theme.bash

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+# Simplistic one-liner theme to display source control management info beside
+# the ordinary bash prompt.
+
+prompt() {
+  PS1="${reset_color}[\u@\h \W]$(scm_prompt_info)${reset_color}\$ "
+}
+
+PROMPT_COMMAND=prompt