Merge pull request #12 from alexanderdean/master

Add instructions on how to configure Proguard using Build.scala instead of build.sbt

README.md

@@ -23,15 +23,34 @@ In case if you have a xsbt version different from one used in Maven artifacts or
 
 ###Injecting the Plugin into desired project
 
-Inject the proguard settings into your project through `build.sbt`:
+####1. Using build.sbt
+
+To inject the proguard settings into your project through `build.sbt`:
 
     seq(ProguardPlugin.proguardSettings :_*)
 
 Add proguard keep options in `build.sbt`. Main class keep example:
 
     proguardOptions += keepMain("Test")
 
-This will add a `proguard` action which will run Proguard and generate output in `target/<scala-version>/<project-name-version>.min.jar`. You may consult `min-jar-path` setting to see the actual path:
+####2. In your Build.scala
+
+Alternatively, you can configure the proguard settings within your project's `Build.scala` or equivalent:
+
+    import ProguardPlugin._
+    lazy val proguard = proguardSettings ++ Seq(
+      proguardOptions := Seq(keepMain("Test"))
+    )
+
+And then include `proguard` in your `Project` definition as usual:
+
+    lazy val myProject = Project("my-project", file("."))
+      .settings(proguard: _*)
+      ...
+
+####Test
+
+Either of these will add a `proguard` action which will run Proguard and generate output in `target/<scala-version>/<project-name-version>.min.jar`. You may consult `min-jar-path` setting to see the actual path:
 
     > min-jar-path
     [info] /home/siasia/projects/xsbt-proguard-test/target/scala-2.8.1.final/root_2.8.1-0.1.min.jar