Add arbiw bash theme.

themes/arbiw/arbiw.theme.bash

@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+SCM_THEME_PROMPT_PREFIX=''
+SCM_THEME_PROMPT_SUFFIX=''
+function prompt_command() {
+    PS1="${green}\u@\h ${cyan}[\t] ${reset_color}${white}[\w] ${orange}[$(scm_prompt_info)${orange}]\n ${reset_color}\$ ";
+}
+
+PROMPT_COMMAND=prompt_command;