Update README.md

Author: ChrisRackauckas

README.md

@@ -1,4 +1,4 @@
-# Polyester
+# PolyesterForwardDiff
 
 [![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://JuliaSIMD.github.io/Polyester.jl/stable)
 [![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://JuliaSIMD.github.io/Polyester.jl/dev)
@@ -7,4 +7,14 @@
 [![Coverage](https://codecov.io/gh/JuliaSIMD/Polyester.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/JuliaSIMD/Polyester.jl)
 
 
-PolyesterForwardDiff.jl is a parallelized ForwardDiff.jl
+PolyesterForwardDiff.jl is a parallelized ForwardDiff.jl. That's it. It's super fast. See [this paper for some benchmark results](https://www.biorxiv.org/content/10.1101/2021.11.15.468697v1.abstract).
+
+## Example calls
+
+It's pretty much the same as ForwardDiff.jl except it is threaded. The API is the same for gradients and Jacobians.
+
+```julia
+PolyesterForwardDiff.threaded_gradient!(f, dx, x, ForwardDiff.Chunk(8));
+PolyesterForwardDiff.threaded_jacobian!(g, dx, x, ForwardDiff.Chunk(8));
+PolyesterForwardDiff.threaded_jacobian!(g!, y, dx, x, ForwardDiff.Chunk(8));
+```