Added an example reloader config to the examples.

Thanks to thomasst on GitHub for the sample.

Closes #54

THANKS

@@ -11,4 +11,5 @@ Xavier Grangier <grangier@gmail.com>
 Sergey Shepelev <temotor@gmail.com>
 Chris Dent <chris.dent@gmail.com>
 Matt Good <matt@matt-good.net>
-Randall Leeds <randall.leeds@gmail.com>
+Randall Leeds <randall.leeds@gmail.com>
+thomasst <http://github.com/thomasst>

examples/example_gevent_reloader.py

@@ -0,0 +1,31 @@
+import gevent
+import logging
+import os
+import signal
+import sys
+
+def when_ready(server):
+    def monitor():
+        modify_times = {}
+        while True:
+            for module in sys.modules.values():
+                path = getattr(module, "__file__", None)
+                if not path: continue
+                if path.endswith(".pyc") or path.endswith(".pyo"):
+                    path = path[:-1]
+                try:
+                    modified = os.stat(path).st_mtime
+                except:
+                    continue
+                if path not in modify_times:
+                    modify_times[path] = modified
+                    continue
+                if modify_times[path] != modified:
+                    logging.info("%s modified; restarting server", path)
+                    os.kill(os.getpid(), signal.SIGHUP)
+                    modify_times = {}
+                    break
+            gevent.sleep(1)
+
+    gevent.Greenlet.spawn(monitor)
+