Update README to refer to latest release
Update README to refer to latest release

twalpole/poltergeist,afn/poltergeist,twalpole/poltergeist,twalpole/poltergeist,twalpole/poltergeist,teampoltergeist/poltergeist,afn/poltergeist,teampoltergeist/poltergeist,teampoltergeist/poltergeist,teampoltergeist/poltergeist,afn/poltergeist,afn/poltergeist