This is a very simple theme inspired by oh-my-zsh/simple.zsh-theme at master · robbyrussell/oh-my-zsh

• Show exit status of previous command on error.
• Show current vi mode (INSERT, NORMAL).
• Show current git branch name and dirty state.
• Double line prompt

Copy neurosimple.zsh-theme to $ZSH_CUSTOM/themes:

sudo cp neurosimple.zsh-theme $ZSH_CUSTOM/themes/

In your .zshrc:

...
ZSH_THEME="neurosimple"
plugins=(git)
...

This is released under the MIT license.