Adding emulator-options key that can be used to send additional arguments...

src/main/scala/Android.scala

@@ -18,8 +18,8 @@ object AndroidProject extends Plugin {
     "Kill the adb server if it is running.")
 
   private def emulatorStartTask = (parsedTask: TaskKey[String]) =>
-    (parsedTask, toolsPath) map { (avd, toolsPath) =>
-      "%s/emulator -avd %s".format(toolsPath, avd).run
+    (parsedTask, toolsPath, emulatorOptions) map { (avd, toolsPath, emulatorOptions) =>
+      "%s/emulator -avd %s %s".format(toolsPath, avd, emulatorOptions).run
       ()
     }
 

src/main/scala/AndroidBase.scala

@@ -192,6 +192,7 @@ object AndroidBase {
 
     jarPath <<= (platformPath, jarName) (_ / _),
     libraryJarPath <<= (jarPath (_ get)),
+    emulatorOptions := "", 
 
     proguardOption := "",
     proguardExclude <<= (libraryJarPath, classDirectory, resourceDirectory) map {

src/main/scala/AndroidKeys.scala

@@ -36,6 +36,7 @@ object AndroidKeys {
   val manifestSchema = SettingKey[String]("manifest-schema")
   val envs = SettingKey[Seq[String]]("envs")
   val preinstalledModules = SettingKey[Seq[ModuleID]]("preinstalled-modules")
+  val emulatorOptions = SettingKey[String]("emulator-options")
 
   /** Determined Settings */
   val packageApkName = TaskKey[String]("package-apk-name")