Add instructions on using Dotty in your own project

Author: smarter

README.md

@@ -24,7 +24,13 @@ https://github.com/smarter/dotty-bridge#implementation-status for what works and
 what doesn't.
 
 If compiling this example project fails, you probably have a global sbt plugin
-that does not work with dotty, try to disable all plugins in `~/.sbt/0.13/plugins`.
+that does not work with dotty, try to disable all plugins in
+`~/.sbt/0.13/plugins`.
+
+### Using Dotty in your own project
+
+1. [Use sbt 0.13.11 or newer](https://github.com/smarter/dotty-example-project/blob/master/project/build.properties).
+2. Configure your build like explained in [build.sbt](https://github.com/smarter/dotty-example-project/blob/master/build.sbt#L9-L10)
 
 ### Discuss
 

build.sbt

@@ -3,9 +3,12 @@ lazy val root = (project in file(".")).
     name := "dotty-example-project",
     description := "Example sbt project that compiles using Dotty",
     version := "0.1",
-
     mainClass in (Compile, run) := Some("Hello"),
 
+
+    // All the settings set below this line are important to get your project
+    // to compile with Dotty. Please read the comments carefully.
+
     // Dotty version
     scalaVersion := "0.1-SNAPSHOT",