Added an option: when this option is active and the message queue is …

…empty "get" function waits for a message to be pushed into the queue

README.md

@@ -118,6 +118,14 @@ It will eventually go back onto the queue after a timeout if you don't delete it
 // Stating constants several times throughout the manual is unsafe because if it gets altered 
 // an editor will have to change one statement and forget about the other one.
 
+Note that all of the above will return None if the queue is empty.
+```python
+message = queue.get(verbose=False, period=0.5)
+```
+will activate persistance so that a function will not be completed until it actually recieves a message.
+An attempt to pop a message will be done every "period" seconds (2 times a second in the example)
+
+
 ### **Delete** a message from the queue:
 ```python
 queue.delete(message_id)

iron_mq.py

@@ -1,5 +1,6 @@
 import iron_core
 import urllib
+import time
 try:
     import json
 except:
@@ -87,23 +88,30 @@ def post(self, *messages):
         return result['body']
 
 
-    def get(self, verbose=False, max=None):
+    def get(self, verbose=False, period=0, max=None):
         """Executes an HTTP request to get a message off of a queue.
 
         Keyword arguments:
-	verbose -- If true, the entire dict is returned instead of the message body.
+		wait -- If true and the queue is empty, the function waits until a message appears
+		verbose -- If true, the entire dict is returned instead of the message body.
         max -- The maximum number of messages to pull. Defaults to 1.
         """
-
-        n = ""
-        if max is not None:
-            n = "&n=%s" % max
-        url = "queues/%s/messages?%s" % (self.name, n)
-        result = self.client.get(url)
-	if verbose is True:
-            return result
-	else:
-	    return result['body']
+		result = None
+        while (result == None):
+		    n = ""
+		    if max is not None:
+		        n = "&n=%s" % max
+		    url = "queues/%s/messages?%s" % (self.name, n)
+		    result = self.client.get(url)
+
+			if period == 0:
+				break
+			sleep(period)
+
+		if verbose is True:
+	        return result
+		else:
+	   		return result['body']
 
 
 class IronMQ: