[MOD] filees to understand networking and added some connection examples

13_Networking.jl

@@ -1,4 +1,4 @@
-conn = connect(1234)
+conn = connect(1234) # Defaults lo localhost
 
 write(conn, "Hello  world!\n")
 
@@ -14,3 +14,4 @@ end
 t = Task(foo)
 
 consume(t)
+

13_connection2server.jl

@@ -0,0 +1,5 @@
+conn = connect(1234)
+
+println(conn, "hello world")
+
+readline(conn)

13_server.jl

@@ -1,3 +1,4 @@
+# Asyncronous connection server
 @async begin
     server = listen(1234)
     while true