add developer instructions to README

README.md

@@ -3,4 +3,37 @@ Solid is a Windows .Net Framework desktop application that can be used to check,
 
 Learn more at [software.sil.org](https://software.sil.org/solid/).
 
-## Developers
+For bug reports, please [submit an issue in our issue tracker](https://github.com/sillsdev/solid/issues).
+
+# Developers
+
+### Pull request process
+
+Generally, a PR is required for code changes.  At least one approving review and all unit tests passing are required for a PR to be merged.
+
+### Releasing a new version
+
+This project uses GitHub Actions CI to automate building, running unit tests, creating an installer, and creating a GitHub release.
+
+1. Prepare for a release by changing the version numbers hard-coded in the installer files (search for current version)
+1. Push a version tag in the format `v1.0` to the commit you want to release.  This will kick off GHA to build, test, and create the installer
+1. Once finished, visit https://github.com/sillsdev/solid/releases and modify the draft release, automatically created, to your satisfaction.  Publish the release.
+1. Publish the new installer file on software.sil.org
+
+### Building locally (debug)
+
+1. `dotnet restore src/solid.sln`
+1. `dotnet build src/solid.sln` (debug)
+or
+1. `dotnet build -c Release src/solid.sln` (release)
+
+Alternatively you can use Visual Studio and build / run tests there
+
+### Running unit tests
+
+`dotnet test output/net461/*Tests.dll`
+
+### Create an installer locally
+(normally GHA will do this for you - this is if you need to make an installer locally)
+Make sure you [have InnoSetup installed locally](https://jrsoftware.org/isinfo.php) on your machine and that iscc.exe is available in your PATH
+`iscc .\installer\setup.iss`