add README details

README.md

@@ -3,7 +3,11 @@
 [![Build Status](https://github.com/ZIB-IOL/CombinatorialLinearOracles.jl/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/ZIB-IOL/CombinatorialLinearOracles.jl/actions/workflows/CI.yml?query=branch%3Amain)
 [![Coverage](https://codecov.io/gh/ZIB-IOL/CombinatorialLinearOracles.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/ZIB-IOL/CombinatorialLinearOracles.jl)
 
-This package is primarily a companion of [FrankWolfe.jl](https://github.com/ZIB-IOL/FrankWolfe.jl/) and implements several combinatorial linear minimization oracles, for instance for minimizing a linear function over a polytope defined by objects on graphs (spanning trees, matchings, ...).
+This package implements linear minimization oracles which compute a minimizer of a linear function over a compact convex set.
+
+CombinatorialLinearOracles is primarily a companion of [FrankWolfe.jl](https://github.com/ZIB-IOL/FrankWolfe.jl/) and implements several combinatorial linear minimization oracles, for instance for minimizing a linear function over a polytope defined by objects on graphs (spanning trees, matchings, ...).
+
+CombinatorialLinearOracles also implements bounded linear minimization oracles (BLMO) for usage in the branch-and-bound of [Boscia.jl](https://github.com/ZIB-IOL/Boscia.jl).
 
 ## Installation
 
@@ -13,3 +17,17 @@ Pkg.add("https://github.com/ZIB-IOL/CombinatorialLinearOracles.jl")
 
 import CombinatorialLinearOracles
 ```
+
+## Usage
+
+```julia
+import FrankWolfe
+import CombinatorialLinearOracles as CLO
+using Graphs
+
+g = complete_graph(5)
+lmo = CLO.MatchingLMO(g)
+
+direction = randn(Graphs.ne(g))
+opt_matching = FrankWolfe.compute_extreme_point(lmo, direction)
+```