Update README.md

Author: kotowicz

README.md

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 ## A) ABOUT
 
-This is version 0.5.0 of Class Inheritance Browser, originally released @ http://www.mathworks.com/matlabcentral/fileexchange/27633.
+This is version 0.5.6 of Class Inheritance Browser, originally released @ http://www.mathworks.com/matlabcentral/fileexchange/27633.
 
 This tool searches a given directory and populates a browser window with pertinent information about each discovered class, including properties, methods, and superclasses. Other useful features include opening a class definition file from the browser window, opening a file to the line where a certain method is defined, and printing property help to the console.