envy theme to implement rbenv version promt

themes/envy/envy.theme.bash

@@ -0,0 +1,16 @@
+#!/bin/bash
+SCM_THEME_PROMPT_DIRTY=" ${red}✗"
+SCM_THEME_PROMPT_CLEAN=" ${bold_green}✓"
+SCM_THEME_PROMPT_PREFIX=" |"
+SCM_THEME_PROMPT_SUFFIX="${green}|"
+
+GIT_THEME_PROMPT_DIRTY=" ${red}✗"
+GIT_THEME_PROMPT_CLEAN=" ${bold_green}✓"
+GIT_THEME_PROMPT_PREFIX=" ${green}|"
+GIT_THEME_PROMPT_SUFFIX="${green}|"
+
+function prompt_command() {
+    PS1="\n${yellow}$(rbenv_version_prompt)$(rvm_version_prompt) ${purple}\h ${reset_color}in ${green}\w\n${bold_cyan}$(scm_char)${green}$(scm_prompt_info) ${green}→${reset_color} "
+}
+
+PROMPT_COMMAND=prompt_command;