README.md in trackler-2.2.1.117

- old
+ new

@@ -40,10 +40,10 @@
 * Generate a valid ISBN-13 from the input ISBN-10 (and maybe verify it again with a derived verifier).
 
 * Generate valid ISBN, maybe even from a given starting ISBN.
 ## Running the tests
 
-To run the tests, run the command `busted .` from within the exercise directory.
+To run the tests, run the command `busted` from within the exercise directory.
 
 ## Further information
 
 For more detailed information about the Lua track, including how to get help if
 you're having trouble, please visit the exercism.io [Lua language page](http://exercism.io/languages/lua/about).