Update CHANGELOG.md

Changed the chronological order

CHANGELOG.md

@@ -1,13 +1,15 @@
-# Changes to Qresp
+Change Log
+==========
 
-## Version 1.0 [12/18/2018]
-- Initial Qresp release
-
-## Version 1.1 [1/25/2019]
+v1.1.0 (2019/01/25)
+-------------------
 - Fixed bugs related to port number
 - Fixed bugs related to DOI minting and search functionality
 - Added REST API functionality - Swagger
 - Added Docker file containing embedded Http server(Nginx) and Mongo DB 
 - Added unit test cases
 - Added CI(Travis)
 
+v1.0.0 (2018/12/18)
+-------------------
+- Initial Qresp release