Update README.md

Author: abbysko

README.md

@@ -2,7 +2,7 @@
 [![View Delta Plot on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)](https://www.mathworks.com/matlabcentral/fileexchange/95823-delta-plot)
 [![Open in MATLAB Online](https://www.mathworks.com/images/responsive/global/open-in-matlab-online.svg)](https://matlab.mathworks.com/open/github/v1?repo=MATLAB-Graphics-and-App-Building/delta-plot)
 
-Version: 1.0
+Version: 1.1
 
 deltaplot creates multiple line segments, each showing the difference between
 pairs of values.