Demonstrate a "minimum viable project" in the quick start

docs/index.md

@@ -7,26 +7,70 @@ sbt-typelevel helps Scala projects to publish early-semantically-versioned, bina
 [![sbt-typelevel Scala version support](https://index.scala-lang.org/typelevel/sbt-typelevel/sbt-typelevel/latest-by-scala-version.svg?targetType=Sbt)](https://index.scala-lang.org/typelevel/sbt-typelevel/sbt-typelevel)
 [![Discord](https://img.shields.io/discord/632277896739946517.svg?label=&logo=discord&logoColor=ffffff&color=404244&labelColor=6A7EC2)](https://discord.gg/D7wY3aH7BQ)
 
-```scala
-// Pick one, for project/plugins.sbt
+Pick either the `sbt-typelevel` (recommended) or `sbt-typelevel-ci-release` plugin.
+
+#### `project/plugins.sbt`
 
+```scala
 // Full service, batteries-included, let's go!
 addSbtPlugin("org.typelevel" % "sbt-typelevel" % "@VERSION@")
 
 // Set me up for CI release, but don't touch my scalacOptions!
 addSbtPlugin("org.typelevel" % "sbt-typelevel-ci-release" % "@VERSION@")
+```
 
-// Then, in your build.sbt
+Then configure your build.
+
+#### `build.sbt`
+
+```scala
 ThisBuild / tlBaseVersion := "0.4" // your current series x.y
-ThisBuild / developers +=
-  tlGitHubDev("armanbilge", "Arman Bilge") // your GitHub handle and name
+
+ThisBuild / organization := "org.typelevel"
+ThisBuild / organizationName := "Typelevel"
+ThisBuild / licenses := Seq(License.Apache2)
+ThisBuild / developers := Seq(
+  // your GitHub handle and name
+  tlGitHubDev("armanbilge", "Arman Bilge")
+)
+
+// true by default, set to false to publish to s01.oss.sonatype.org
+ThisBuild / tlSonatypeUseLegacyHost := true
+
+val Scala213 = "2.13.8"
+ThisBuild / crossScalaVersions := Seq(Scala213, "3.1.1")
+ThisBuild / scalaVersion := Scala213 // the default Scala
+
+lazy val root = tlCrossRootProject.aggregate(core, extra, tests)
+
+lazy val core = crossProject(JVMPlatform, JSPlatform)
+  .in(file("core"))
+  .settings(
+    name := "woozle-core",
+    libraryDependencies += "org.typelevel" %%% "cats-core" % "2.7.0"
+  )
+
+lazy val extra = project
+  .in(file("extra"))
+  .dependsOn(core.jvm)
+  .settings(name := "woozle-extra")
+
+lazy val tests = crossProject(JVMPlatform, JSPlatform)
+  .in(file("tests"))
+  .enablePlugins(NoPublishPlugin)
+  .dependsOn(core)
+  .settings(
+    name := "woozle-tests",
+    libraryDependencies += "org.scalacheck" %%% "scalacheck" % "1.15.4" % Test
+  )
 ```
 
 Next, run `githubWorkflowGenerate` in sbt to automatically generate the GitHub Actions workflows.
+This will create a build matrix with axes for Scala version and target platform (JVM, JS, etc.).
+It will also setup a job for publishing tagged releases e.g. `v0.4.5` to Sonatype/Maven.
 
 Finally, on GitHub set the following secrets on your repository:
 
 - `SONATYPE_USERNAME` and `SONATYPE_PASSWORD`
 - `PGP_SECRET`: output of `gpg --armor --export-secret-keys $LONG_ID | base64`
 - `PGP_PASSPHRASE` (optional, use only if your key is passphrase-protected)
-