mark RxImplicits and RxImplicitsTests as old

Author: samuelgruetter

language-adaptors/rxjava-scala/src/main/scala/rx/lang/scala/RxImplicits.scala

@@ -15,6 +15,11 @@
  */
 package rx.lang.scala
 
+/**
+ * This is the old Scala adaptor. It is kept here for backwards compatibility.
+ * The new adaptor is {@code rx.lang.scala.Observable}.
+ */
+@deprecated("use rx.lang.scala.Observable instead", "0.14")
 object RxImplicits {
     import java.{ lang => jlang }
     import language.implicitConversions

language-adaptors/rxjava-scala/src/test/scala/rx/lang/scala/RxImplicitsTests.scala

@@ -17,7 +17,10 @@ package rx.lang.scala
 
 import org.scalatest.junit.JUnitSuite
 
-class UnitTestSuite extends JUnitSuite {
+/**
+ * This is the test suite for the old Scala adaptor.
+ */
+class OldUnitTestSuite extends JUnitSuite {
     import rx.lang.scala.RxImplicits._
 
     import org.junit.{ Before, Test }