Current behavior

Expected behavior

Relevant Zsh configuration (.zshrc)

Irrelevant with the issue

Environment

Spaceship version: `3.11

Solaris and Illumos use Bash as the default shell. However, currently bash-it does not work as expected on them.

This can be fixed as described, tested, and confirmed here.

Here's what I suggest:

• In install.sh, check for `$0S

Add -h and -V options

Basic getopts version:

  #-----------------------------------------------------------------------
  #  Handle command line arguments
  #-----------------------------------------------------------------------
  while getopts ":hV" opt
  do
    # shellcheck disable=SC2214
    case "${opt}" in

      h|help      ) _usage;    exit 0 ;;
      V|version   ) _version;