Customized oh-my-zsh theme with ruby and vault address support

create the following theme for .oh-my-zsh/custom/themes/ya.zsh-theme and then update ~/.zshrc file with

ZSH_THEME="ya"

#ya.zsh-theme
# vim:ft=zsh ts=2 sw=2 sts=2

rvm_current() {
  rvm current 2>/dev/null
}

rbenv_version() {
  rbenv version 2>/dev/null | awk '/[0-9]/{print $1}'
}

PROMPT='
%{$fg_bold[green]%}${PWD/#$HOME/~} $(hostname)%{$reset_color%}$(git_prompt_info) ⌚ %{$fg_bold[red]%}%*%{$reset_color%}
$ '

# Must use Powerline font, for \uE0A0 to render.
ZSH_THEME_GIT_PROMPT_PREFIX=" on %{$fg[magenta]%}\uE0A0 "
ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[red]%}!"
ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$fg[green]%}?"
ZSH_THEME_GIT_PROMPT_CLEAN=""

if [ -e ~/.rvm/bin/rvm-prompt ]; then
  RPROMPT='%{$fg_bold[red]%}‹$(rvm_current)›%{$reset_color%} $VAULT_ADDR %{$fg_bold[blue]%}$HOME%{$reset_color%}'
else
  if which rbenv &> /dev/null; then
    RPROMPT='%{$fg_bold[red]%}$(rbenv_version)%{$reset_color%} $VAULT_ADDR %{$fg_bold[blue]%} $HOME %{$reset_color%}'
  fi
fi