Added untested Scala binding

examples/bindings/scala/libzt.scala

@@ -0,0 +1,13 @@
+
+class ZeroTier {
+  @native def ztjni_socket(socket_family: Int, socket_type: Int, protocol: Int): Int
+}
+
+object ZeroTier extends App {
+
+  System.loadLibrary("zt")
+
+  val libzt = new ZeroTier
+  val fd = libzt.ztjni_socket(2, 1, 0)
+  println(s"zts_socket(): $fd")
+}