Update version number in readme

Author: dave-mw

README.md

@@ -2,7 +2,7 @@
 
 [![View densityScatterChart on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://www.mathworks.com/matlabcentral/fileexchange/95828-densityscatterchart)
 
-Version: 1.0
+Version: 1.1
 
 Density Scatter Chart is a scatter where the color (and/or transparency) of the markers indicates the density of points.