Update matlab online link

add direct path to file

README.md

@@ -6,7 +6,7 @@ Here is where the future PhysIO Matlab Livescript demo lives.
 ### There are two ways to work with this repository:
 
 
-- [![Open in MATLAB Online](https://www.mathworks.com/images/responsive/global/open-in-matlab-online.svg)](https://matlab.mathworks.com/open/github/v1?repo=likeajumprope/PhysIO-Live)
+- [![Open in MATLAB Online](https://www.mathworks.com/images/responsive/global/open-in-matlab-online.svg)](https://matlab.mathworks.com/open/github/v1?repo=likeajumprope/PhysIO-Live&file=main.mlx)
 
 - Run locally on your machine