add discussion in readme

Author: tmigot

README.md

@@ -16,3 +16,10 @@ Please cite this repository if you use SolverCore.jl in your work: see [`CITATIO
 ```
 add SolverCore
 ```
+
+# Bug reports and discussions
+
+If you think you found a bug, feel free to open an [issue](https://github.com/JuliaSmoothOptimizers/SolverCore.jl/issues).
+Focused suggestions and requests can also be opened as issues. Before opening a pull request, start an issue or a discussion on the topic, please.
+
+If you want to ask a question not suited for a bug report, feel free to start a discussion [here](https://github.com/JuliaSmoothOptimizers/Organization/discussions). This forum is for general discussion about this repository and the [JuliaSmoothOptimizers](https://github.com/JuliaSmoothOptimizers) organization, so questions about any of our packages are welcome.