add example

src/main/java/io/colyseus/example/kotlin/Main3.kt

@@ -0,0 +1,42 @@
+package io.colyseus.example.kotlin
+
+import io.colyseus.Client
+import kotlinx.coroutines.GlobalScope
+import kotlinx.coroutines.launch
+import kotlin.concurrent.thread
+
+object Main3 {
+
+    val client = Client("ws://localhost:2567")
+
+    @JvmStatic
+    fun main(args: Array<String>) {
+        for (i in 0..10) connect(i)
+        GlobalScope.launch {
+            for (i in 10..20) connectAsync(i)
+        }
+
+        for (i in 10..20) {
+            GlobalScope.launch {
+                connectAsync(i)
+            }
+        }
+        for (i in 20..30) connect(i)
+
+        thread { while (true) { } }
+    }
+
+    fun connect(i: Int) {
+        println("[#$i] connecting...")
+        client.joinOrCreate(MyState::class.java, "game", callback = { room ->
+            println("[#$i] connected to ${room.name}")
+        }, onError = Exception::printStackTrace)
+    }
+
+    suspend fun connectAsync(i: Int) {
+        println("[#$i] connecting...")
+        with(client.joinOrCreate(MyState::class.java, "game")) {
+            println("[#$i] connected to $name")
+        }
+    }
+}