Update README.md

README.md

@@ -55,7 +55,7 @@ The libary uses the the hardware serial port "Serial" to communcate with the CAT
 
 To use the library you must code a few custom call back functions and register them with the library.  Your callbacks will require specific parameters and return values based on the particular command.  Your functions will be called by the CAT libary upon receipt of the relevant CAT commands.  Your functions need to take whatever actions are necessary to implement the command and where requested, return the appropriate value to the library for transmission back to the CAT controller.
 
-Here is a code sample:
+# Here is a code sample:
 
 in your sketch: