Update version mapping

Queens just released

Author: Peter Wang

README.md

@@ -9,10 +9,10 @@ exactly if you are upgrading Unity Cinder driver from version 0.4.1
 
 Version mapping
 ---------------
-|       | Liberty | Mitaka | Newton | Ocata | Pike   |
-|-------|---------|--------|--------|-------|--------|
-| Unity | 0.3.x   | 0.4.x  | 0.5.x  | 1.x.x | 2.x.x  |
-| VNX   | 6.x.x   | 7.x.x  | 8.x.x  | 9.x.x | 10.x.x |
+|       | Liberty | Mitaka | Newton | Ocata | Pike   | Queens |
+|-------|---------|--------|--------|-------|--------|--------|
+| Unity | 0.3.x   | 0.4.x  | 0.5.x  | 1.x.x | 2.x.x  | 3.x.x  |
+| VNX   | 6.x.x   | 7.x.x  | 8.x.x  | 9.x.x | 10.x.x | 11.x.x |
 
 License
 -------