Fix default port, align with asyncio_redis, fix pool

* Pool had broken methods that didn't make sense, so deleted
* Fix port to be right mongodb default port
* Change pool_size to poolsize to align with asyncio_redis
* Write logs to own logger

asyncio_mongo/protocol.py

@@ -50,7 +50,7 @@ class MongoProtocol(asyncio.Protocol):
     def connection_made(self, transport):
         self.transport = transport
         self._is_connected = True
-        logger.log(logging.INFO, 'Mongo connection made with %')
+        logger.log(logging.INFO, 'Mongo connection made')
 
     def connection_lost(self, exc):
         self._is_connected = False
@@ -62,6 +62,11 @@ class MongoProtocol(asyncio.Protocol):
 
         logger.log(logging.INFO, 'Mongo connection lost')
 
+    @property
+    def is_connected(self):
+        """ True when the underlying transport is connected. """
+        return self._is_connected
+
     def data_received(self, data):
         while self.__waiting_header:
             self.__buffer += data