[REF] extras: move benchmarks and playground into extras

closes #76
closes #73

extras/server.py

@@ -0,0 +1,20 @@
+import sys
+import thread
+import webbrowser
+import time
+
+import BaseHTTPServer, SimpleHTTPServer
+
+def start_server():
+    httpd = BaseHTTPServer.HTTPServer(('127.0.0.1', 3600), SimpleHTTPServer.SimpleHTTPRequestHandler)
+    httpd.serve_forever()
+
+thread.start_new_thread(start_server,())
+url = 'http://127.0.0.1:3600/extras'
+webbrowser.open_new(url)
+
+while True:
+    try:
+        time.sleep(1)
+    except KeyboardInterrupt:
+        sys.exit(0)