Update banners in README

.gitignore

@@ -10,3 +10,5 @@ ghc.mk
 include/HsTimeConfig.h
 include/HsTimeConfig.h.in
 /dist-newstyle/
+/.stack-work/
+/stack*.yaml.lock

README.md

@@ -1,4 +1,9 @@
-The `old-time` Package  [![Hackage](https://img.shields.io/hackage/v/old-time.svg)](https://hackage.haskell.org/package/old-time) [![Build Status](https://travis-ci.org/haskell/old-time.svg)](https://travis-ci.org/haskell/old-time)
-========================
+[![Hackage version](https://img.shields.io/hackage/v/old-time.svg?label=Hackage&color=informational)](http://hackage.haskell.org/package/old-time)
+[![old-time on Stackage Nightly](https://stackage.org/package/old-time/badge/nightly)](https://stackage.org/nightly/package/old-time)
+[![Stackage LTS version](https://www.stackage.org/package/old-time/badge/lts?label=Stackage)](https://www.stackage.org/package/old-time)
+[![Cabal build](https://github.com/haskell/old-time/workflows/Haskell-CI/badge.svg)](https://github.com/haskell/old-time/actions)
+
+The `old-time` Package
+======================
 
 See [`old-time` on Hackage](http://hackage.haskell.org/package/old-time) for more information.