Merge pull request #3407 from rawberg/mira-theme

mira theme shows active node, ruby and java versions

themes/mira.zsh-theme

+# Based on bira zsh theme with nvm, rvm and jenv support
+local return_code="%(?..%{$fg[red]%}%? ↵%{$reset_color%})"
+
+local user_host='%{$terminfo[bold]$fg[green]%}%n@%m%{$reset_color%}'
+local current_dir='%{$terminfo[bold]$fg[blue]%} %~%{$reset_color%}'
+
+local rvm_ruby=''
+if which rvm-prompt &> /dev/null; then
+  rvm_ruby='%{$fg[red]%}‹$(rvm-prompt i v g)›%{$reset_color%}'
+else
+  if which rbenv &> /dev/null; then
+    rvm_ruby='%{$fg[red]%}‹$(rbenv version | sed -e "s/ (set.*$//")›%{$reset_color%}'
+  fi
+fi
+
+local nvm_node=''
+nvm_node='%{$fg[green]%}‹node-$(nvm_prompt_info)›%{$reset_color%}'
+
+local jenv_java=''
+jenv_java='%{$fg[blue]%}‹$(jenv_prompt_info)›%{$reset_color%}'
+
+local git_branch='$(git_prompt_info)%{$reset_color%}'
+
+PROMPT="╭─${user_host} ${current_dir} ${nvm_node} ${rvm_ruby} ${jenv_java} ${git_branch}
+╰─%B$%b "
+RPS1="${return_code}"
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[yellow]%}("
+ZSH_THEME_GIT_PROMPT_SUFFIX=") %{$reset_color%}"