add chruby info to gallois theme

themes/gallois.zsh-theme

@@ -17,9 +17,13 @@ if [[ -s ~/.rvm/scripts/rvm ]] ; then
 else
   if which rbenv &> /dev/null; then
     RPS1='$(git_custom_status)%{$fg[red]%}[`rbenv version | sed -e "s/ (set.*$//"`]%{$reset_color%} $EPS1'
+  else
+    if which chruby_prompt_info &> /dev/null; then
+      RPS1='$(git_custom_status)%{$fg[red]%}[`chruby_prompt_info`]%{$reset_color%} $EPS1'
     else
       RPS1='$(git_custom_status) $EPS1'
     fi
   fi
+fi
 
 PROMPT='%{$fg[cyan]%}[%~% ]%(?.%{$fg[green]%}.%{$fg[red]%})%B$%b '