Add multi-threaded example

example/multi.rb

@@ -0,0 +1,41 @@
+
+require 'agoo'
+
+Agoo::Log.configure(dir: '',
+		    console: true,
+		    classic: true,
+		    colorize: true,
+		    states: {
+		      INFO: true,
+		      DEBUG: false,
+		      connect: true,
+		      request: true,
+		      response: true,
+		      eval: true,
+		      push: false,
+		    })
+
+Agoo::Server.init(6464, 'root', thread_count: 4)
+
+class MyHandler
+  def call(req)
+    [ 200, { }, [ "hello world" ] ]
+  end
+end
+
+handler = MyHandler.new
+# Register the handler before calling start.
+Agoo::Server.handle(:GET, "/hello", handler)
+
+Agoo::Server.start()
+
+# Agoo::Server.start() returns immediately after starting the handler
+# threads. This allows additional work to take place after the start. If there
+# is no other action needed other than to let the server handle requests then
+# a simple sleep loop can be used to keep the app from exiting.
+while true
+  sleep(1)
+end
+
+# To run this example type the following then go to a browser and enter a URL of localhost:6464/hello.
+# ruby hello.rb