Release 2.6.1

Change-Id: I7ca48b8dcb5c8dc5d6c2e1981a1d8aae82071ec0

Author: mengli

README

@@ -1,4 +1,13 @@
 #Author Xingen Wang ([email protected])
+        Meng Li ([email protected])
+
+Release 2.6.1:
+Add failback support.
+We also re-implement the connection pool based on Apache commons pool in this release.
+Fix issue 18.
+
+TODO:
+We will add SASL support in next version.
 
 Release 2.6.0:
 add slf4j logger support.