Prep for public release (#9)

Author: odow

README.md

@@ -3,10 +3,6 @@
 [![Build Status](https://github.com/jump-dev/MathOptLazy.jl/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/jump-dev/MathOptLazy.jl/actions?query=workflow%3ACI)
 [![codecov](https://codecov.io/gh/jump-dev/MathOptLazy.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/jump-dev/MathOptLazy.jl)
 
-> [!warning]
-> This package is not registered and it is under active development. Breaking
-> changes may occur at any time.
-
 [MathOptLazy.jl](https://github.com/jump-dev/MathOptLazy.jl) is an experimental meta-solver for problems with lazy constraints.
 
 ## License
@@ -25,7 +21,7 @@ Install `MathOptLazy` using `Pkg.add`:
 
 ```julia
 import Pkg
-Pkg.add(; url = "https://github.com/jump-dev/MathOptLazy.jl")
+Pkg.add("MathOptLazy")
 ```
 
 ## Use with JuMP