update installation instructions

Author: baggepinnen

README.md

@@ -14,6 +14,8 @@ Requires [JuliaSimCompiler.jl](https://help.juliahub.com/juliasimcompiler/stable
 ## Installation
 To install this library, first follow the [installation instructions for JuliaSimCompiler](https://juliacomputing.github.io/JuliaSimCompiler.jl/stable/#Installing-and-Using-JuliaSimCompiler). In particular, you need to [add the JuliaHub Registry](https://help.juliahub.com/juliasim/dev/gettingstarted/juliahubregistry/). 
 
-After the registry is added and JuliaSimCompiler is installed, you may install this package. This package is currently not registered in any register and must thus be installed by URL.
-
-
+After the registry is added and JuliaSimCompiler is installed, you may install this package. This package is also registered in the JuliaHubRegistry, so you may add it with
+```
+pkg> add ModelingToolkitSampledData
+```
+after you have followed the steps above.

docs/src/index.md

@@ -17,4 +17,8 @@ To learn about the fundamentals of sampled-data modeling in ModelingToolkit, che
 ## Installation
 To install this library, first follow the [installation instructions for JuliaSimCompiler](https://juliacomputing.github.io/JuliaSimCompiler.jl/stable/#Installing-and-Using-JuliaSimCompiler). In particular, you need to [add the JuliaHub Registry](https://help.juliahub.com/juliasim/dev/gettingstarted/juliahubregistry/). 
 
-After the registry is added and JuliaSimCompiler is installed, you may install this package. This package is currently not registered in any register and must thus be installed by URL.
+After the registry is added and JuliaSimCompiler is installed, you may install this package. This package is also registered in the JuliaHubRegistry, so you may add it with
+```
+pkg> add ModelingToolkitSampledData
+```
+after you have followed the steps above.