Update README.md

Author: JalaliLabUCLA

README.md

@@ -11,7 +11,7 @@ Image processing toolbox is needed to run this function, function has  been test
 
 ## Copyright
 
-PST function  is developed in Jalali Lab at University of California,  Los Angeles (UCLA).  PST is a spin-off from research on the photonic time stretch technique in Jalali lab at UCLA.  More information about the technique can be found on our group  website: http://www.photonics.ucla.edu
+PST function  using MATLAB is developed in Jalali Lab at University of California,  Los Angeles (UCLA).  PST is a spin-off from research on the photonic time stretch technique in Jalali lab at UCLA.  More information about the technique can be found on our group  website: http://www.photonics.ucla.edu
 
 This function is provided for research purposes only. A license must be  obtained from the University of California, Los Angeles for any commercial  applications. The software is protected under a US patent.