Update README.md

Fix #569

Author: zsunberg

README.md

@@ -157,6 +157,7 @@ Many models have been implemented using the POMDPs.jl interface for various proj
 | [AEMS](https://github.com/JuliaPOMDP/AEMS.jl) | [![Build Status](https://github.com/JuliaPOMDP/AEMS.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/JuliaPOMDP/AEMS.jl) <br> [![Coverage Status](https://codecov.io/gh/JuliaPOMDP/AEMS.jl/badge.svg)](https://coveralls.io/r/JuliaPOMDP/AEMS.jl) | Online | N-N-N | ★★ |
 | [PointBasedValueIteration](https://github.com/JuliaPOMDP/PointBasedValueIteration.jl) | [![Build status](https://github.com/JuliaPOMDP/PointBasedValueIteration.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/JuliaPOMDP/PointBasedValueIteration.jl/actions/workflows/CI.yml) <br> [![Coverage Status](https://codecov.io/gh/JuliaPOMDP/PointBasedValueIteration.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/JuliaPOMDP/PointBasedValueIteration.jl?branch=master) | Offline | N-N-N | ★★ |
 | [GapHeuristicSearch](https://github.com/JuliaPOMDP/GapHeuristicSearch.jl) | [![CI](https://github.com/JuliaPOMDP/GapHeuristicSearch.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/JuliaPOMDP/GapHeuristicSearch.jl/actions/workflows/CI.yml) <br> [![codecov](https://codecov.io/github/JuliaPOMDP/GapHeuristicSearch.jl/graph/badge.svg)](https://codecov.io/github/JuliaPOMDP/GapHeuristicSearch.jl) | Online | ?-?-? | ★★★ |
+| [CompressedBeliefMDPs](https://github.com/JuliaPOMDP/CompressedBeliefMDPs.jl) | [![Build Status](https://github.com/JuliaPOMDP/CompressedBeliefMDPs.jl/actions/workflows/CI.yml/badge.svg?branch=main)](https://github.com/JuliaPOMDP/CompressedBeliefMDPs.jl/actions/workflows/CI.yml?query=branch%3Amain) <br> [![codecov](https://codecov.io/gh/JuliaPOMDP/CompressedBeliefMDPs.jl/graph/badge.svg?token=FXmEi9Fscd)](https://codecov.io/gh/JuliaPOMDP/CompressedBeliefMDPs.jl) <br> [![paper](https://joss.theoj.org/papers/967acf3a5b70351313a995c12e03849b/status.svg)](https://joss.theoj.org/papers/967acf3a5b70351313a995c12e03849b) | Offline | ?-?-? | ★★★★ | 
 
 <sup>1</sup>: Will run, but will not converge to optimal solution