Updates Zhann theme

themes/zhann.zsh-theme

-PROMPT='%{$fg_bold[green]%}%p %{$fg[cyan]%}%c%{$fg_bold[blue]%}$(git_prompt_info)%{$fg_bold[blue]%} % %{$reset_color%}'
+autoload -U colors && colors
 
-if [ -e ~/.rvm/bin/rvm-prompt ]; then
-  RPROMPT='%{$reset_color%} %{$fg[red]%}$(~/.rvm/bin/rvm-prompt i v g) %{$reset_color%}'
-else
-  if which rbenv &> /dev/null; then
-    RPROMPT='%{$reset_color%} %{$fg[red]%}$(rbenv version | sed -e "s/ (set.*$//") %{$reset_color%}'
-  fi
-fi
+autoload -Uz vcs_info
 
+zstyle ':vcs_info:*' stagedstr '%F{green}●'
+zstyle ':vcs_info:*' unstagedstr '%F{yellow}●'
+zstyle ':vcs_info:*' check-for-changes true
+zstyle ':vcs_info:(sv[nk]|bzr):*' branchformat '%b%F{1}:%F{11}%r'
+zstyle ':vcs_info:*' enable git svn
+theme_precmd () {
+    if [[ -z $(git ls-files --other --exclude-standard 2> /dev/null) ]] {
+        zstyle ':vcs_info:*' formats ' [%b%c%u%B%F{green}]'
+    } else {
+        zstyle ':vcs_info:*' formats ' [%b%c%u%B%F{red}●%F{green}]'
+    }
+
+    vcs_info
+}
+
+setopt prompt_subst
+PROMPT='%B%F{blue}%c%B%F{green}${vcs_info_msg_0_}%B%F{magenta} %{$reset_color%}% '
+
+autoload -U add-zsh-hook
+add-zsh-hook precmd  theme_precmd
 
-ZSH_THEME_GIT_PROMPT_PREFIX=" (%{$fg[red]%}"
-ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
-ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[blue]%}) %{$fg[yellow]%}✗%{$reset_color%}"
-ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg[blue]%})"